Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Study of neutron-rich nuclei reaction using ImQMD ‎model Study of neutron-rich nuclei reaction using ImQMD ‎model 569 577 1649 10.47176/ijpr.20.4.27311 FA V Zanganeh Department of Physics, Golestan University, Gorgan‎, Iran A Izadpanah Department of Physics, Golestan University, Gorgan‎, Iran M Ahmadi Department of Physics, Golestan University, Gorgan‎, Iran Journal Article 2016 12 12 In the present study, the fusion reactions induced by neutron-rich nuclei have been investigated using the improved quantum molecular-dynamics (ImQMD) model. First, the accuracy of the results was determined by using a set of parameters IQ3a for 16O+92Zr, 40Ca+46Ti   and 16O+154Sm fusion excitation functions. The obtained results revealed that the measured fusion excitation function can be reasonably well reproduced. A comparison was also performed with the theoretical results based on the coupled-channel calculations. Then, the time evolution of densities for the 16O+59Co and 32S+92Zr reactions in which the target nuclei were neutron-rich were studied and the fusion cross sections were calculated dynamically. It was found that the fusion cross sections of these reactions at energies around the Coulomb barrier can be well reproduced by using the ImQMD modle. In the present study, the fusion reactions induced by neutron-rich nuclei have been investigated using the improved quantum molecular-dynamics (ImQMD) model. First, the accuracy of the results was determined by using a set of parameters IQ3a for 16O+92Zr, 40Ca+46Ti   and 16O+154Sm fusion excitation functions. The obtained results revealed that the measured fusion excitation function can be reasonably well reproduced. A comparison was also performed with the theoretical results based on the coupled-channel calculations. Then, the time evolution of densities for the 16O+59Co and 32S+92Zr reactions in which the target nuclei were neutron-rich were studied and the fusion cross sections were calculated dynamically. It was found that the fusion cross sections of these reactions at energies around the Coulomb barrier can be well reproduced by using the ImQMD modle. neutron-rich nuclei ImQMD dynamic model coupling model fusion cross section Skyrme force https://ijpr.iut.ac.ir/article_1649_f89ae25db38171f516e5c1e3229b6f50.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Study of the optical properties of Aluminum zigzag thin films via transfer ‎matrix Study of the optical properties of Aluminum zigzag thin films via transfer ‎matrix 579 589 1650 10.47176/ijpr.20.4.5121 FA M Gholizadeh Arashti Department of Physics, Faculty of science,Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, ‎Islamic Azad University, Tehran, Iran‎ 0000-0001-7071-8227 M Fakharpour Department of Physics, Faculty of science, ‎‏ ‏Maybod Branch, Islamic Azad University, Maybod, Iran‎ Journal Article 2019 11 26 The transfer matrix method adopted to solve the linearly polarized light propagation problem in order to study the occurrence of absorption transitions for Aluminum zigzag thin films. For different incident light, azimuthal angles, arms number and lengths, the optical results showed that the intensity of absorption peak of s-polarization remains constant as the incident light angle increases, while the intensity of absorption peaks for p-polarization increases. According to the variations of spectra for different azimuthal angles, the results of p-polarization are opposite to s polarization. Also, changing the number of arms from two to three, three to four and four to five, shift the peaks of absorption spectrum towards longer (red shift), shorter (blue shift) and longer wavelengths (red shift), respectively. This behavior can be observed for zigzag nano-structure with different arm lengths. The transfer matrix method adopted to solve the linearly polarized light propagation problem in order to study the occurrence of absorption transitions for Aluminum zigzag thin films. For different incident light, azimuthal angles, arms number and lengths, the optical results showed that the intensity of absorption peak of s-polarization remains constant as the incident light angle increases, while the intensity of absorption peaks for p-polarization increases. According to the variations of spectra for different azimuthal angles, the results of p-polarization are opposite to s polarization. Also, changing the number of arms from two to three, three to four and four to five, shift the peaks of absorption spectrum towards longer (red shift), shorter (blue shift) and longer wavelengths (red shift), respectively. This behavior can be observed for zigzag nano-structure with different arm lengths. Aluminum zigzag thin film linearly polarized light optical spectra transfer matrix https://ijpr.iut.ac.ir/article_1650_0bd9db4386564777c3c0cd70da3eaf31.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Visible and near infrared upconversion emission from Tm3+, Yb3+ ‎doped SrF2 nanoparticles Visible and near infrared upconversion emission from Tm3+, Yb3+ ‎doped SrF2 nanoparticles 591 597 1651 10.47176/ijpr.20.4.37861 FA M Ghorashi Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, Iran H R Madaah-Hosseini Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran E Mohajerani Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran Journal Article 2019 05 19 Tm<sup>3+</sup>, Yb<sup>3+</sup>-codoped SrF<sub>2</sub> nanoparticles were synthesized through a facile hydrothermal ‎technique. Citrate ions were introduced as the capping agent into the reaction. Upconversion ‎nanoparticles were characterized by field emission scanning electron microscopy (FESEM), ‎Energy dispersive x-ray spectroscopy (EDS), x-ray diffraction (XRD), Dynamic light scattering ‎‎(DLS), Zeta potential, Fourier transform Infrared spectroscopy (Ft-IR), and the 980 nm laser induced ‎photoluminescence spectroscopy. Rare-earth ions (Na<sup>+</sup>), which are the cations of citrate salts, ‎are incorporated into the structure to  act as charge compensators. Upconversion emission in the ‎visible and NIR region was observed by the 980 nm irradiation. Nanoparticles with a narrow size ‎distribution and a uniform morphology were directly dispersible in water, forming a quite transparent ‎suspension. Nanoparticles size was approximately 10 nm. High penetration of the  Near-Infrared light into ‎the body tissue makes these nanoparticles appropriate for tumor targeting in the deeper tissues for ‎the purpose of bioimaging and photodynamic therapy‎.   Tm<sup>3+</sup>, Yb<sup>3+</sup>-codoped SrF<sub>2</sub> nanoparticles were synthesized through a facile hydrothermal ‎technique. Citrate ions were introduced as the capping agent into the reaction. Upconversion ‎nanoparticles were characterized by field emission scanning electron microscopy (FESEM), ‎Energy dispersive x-ray spectroscopy (EDS), x-ray diffraction (XRD), Dynamic light scattering ‎‎(DLS), Zeta potential, Fourier transform Infrared spectroscopy (Ft-IR), and the 980 nm laser induced ‎photoluminescence spectroscopy. Rare-earth ions (Na<sup>+</sup>), which are the cations of citrate salts, ‎are incorporated into the structure to  act as charge compensators. Upconversion emission in the ‎visible and NIR region was observed by the 980 nm irradiation. Nanoparticles with a narrow size ‎distribution and a uniform morphology were directly dispersible in water, forming a quite transparent ‎suspension. Nanoparticles size was approximately 10 nm. High penetration of the  Near-Infrared light into ‎the body tissue makes these nanoparticles appropriate for tumor targeting in the deeper tissues for ‎the purpose of bioimaging and photodynamic therapy‎.   upconversion nanoparticles strontium fluoride ‎ Tm and Yb dopants hydrothermal ‎synthesis optical properties‎ https://ijpr.iut.ac.ir/article_1651_da7e2fa105954ae9fe6032da9eeba155.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Assessment of the absorbed dose uncertainty of prostate due to tissue swelling and ‎radioactive sources displacement in brachytherapy using Monte Carlo method Assessment of the absorbed dose uncertainty of prostate due to tissue swelling and ‎radioactive sources displacement in brachytherapy using Monte Carlo method 599 613 1652 10.47176/ijpr.20.4.41043 FA Z Aghaei Physics Department , Isfahan University of Technology, Isfahan, Iran‎ Alireza Karimian Department of Biomedical Engineering, Faculty of Engineering, University of Isfahan 0000-0003-2543-4772 M H Alamatsaz Physics Department , Isfahan University of Technology, Isfahan, Iran‎ Journal Article 2020 04 14 Brachytherapy is a kind of cancer treatment in  which radiation sources are implanted inside or close to the cancerous tissue. ‎The purpose of this research is to calculate the absorbed dose uncertainty of prostate tissue, due to its swelling, ‎displacement of the implanted seed sources and also, to address the effect of these factors simultaneously, in brachytherapy of prostate. ‎In this research, MCNPX2.6 code, the TG-43U1 protocol and ORNL body phantom were used to simulate the brachytherapy ‎of prostate using iodine-125 seed sources. In the first study, 84 sources of iodine with the  shapes of seed and then points  were ‎implanted inside the prostate with the volume of 38.01 cm<sup>3</sup>. The radiation absorbed dose was found to be 110.59 and ‎‎110.57 Gy, respectively. Considering the 50% prostate inflation after implantation, the radiation absorbed doses of prostate ‎showed a reduction of  more than of 17%. In the second therapeutic plan, by using 76 seed sources of I-125, considering 12% ‎swelling of prostate and applying the  displacement of seed sources in three directions: left–right (1.8mm), front-back (2.1mm) and top–‎down (3.4mm)),  the radiation dose amount of the cancerous tissue was reduced about 21%. So, the results ‎of seed and point sources of brachytherapy were very close to each other. Therefore, in simulation studies, point sources can be used ‎instead of seed sources to  reduce the computational complexity. Also,  this research showed the effects of swelling and ‎displacement of brachytherapy sources on  the amount of  the absorbed dose of prostate and its treatment were‎ noteworthy. Brachytherapy is a kind of cancer treatment in  which radiation sources are implanted inside or close to the cancerous tissue. ‎The purpose of this research is to calculate the absorbed dose uncertainty of prostate tissue, due to its swelling, ‎displacement of the implanted seed sources and also, to address the effect of these factors simultaneously, in brachytherapy of prostate. ‎In this research, MCNPX2.6 code, the TG-43U1 protocol and ORNL body phantom were used to simulate the brachytherapy ‎of prostate using iodine-125 seed sources. In the first study, 84 sources of iodine with the  shapes of seed and then points  were ‎implanted inside the prostate with the volume of 38.01 cm<sup>3</sup>. The radiation absorbed dose was found to be 110.59 and ‎‎110.57 Gy, respectively. Considering the 50% prostate inflation after implantation, the radiation absorbed doses of prostate ‎showed a reduction of  more than of 17%. In the second therapeutic plan, by using 76 seed sources of I-125, considering 12% ‎swelling of prostate and applying the  displacement of seed sources in three directions: left–right (1.8mm), front-back (2.1mm) and top–‎down (3.4mm)),  the radiation dose amount of the cancerous tissue was reduced about 21%. So, the results ‎of seed and point sources of brachytherapy were very close to each other. Therefore, in simulation studies, point sources can be used ‎instead of seed sources to  reduce the computational complexity. Also,  this research showed the effects of swelling and ‎displacement of brachytherapy sources on  the amount of  the absorbed dose of prostate and its treatment were‎ noteworthy. prostate cancer brachytherapy absorbed dose uncertainty Monte Carlo method https://ijpr.iut.ac.ir/article_1652_dfeb7fc032bcb76a1f87cb172b0984fa.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Investigation of factors affecting on the efficiency of second harmonic ‎generation of the continuous-wave focused Gaussian beam of 1064 nm inside the ‎periodically poled nonlinear crystals Investigation of factors affecting on the efficiency of second harmonic ‎generation of the continuous-wave focused Gaussian beam of 1064 nm inside the ‎periodically poled nonlinear crystals 615 625 1653 10.47176/ijpr.20.4.37381 FA H Amrollahi Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran A Arabanian Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran Journal Article 2019 04 04 In this research, the nonlinear propagation equations of the fundamental and second harmonic waves coupled to the heat equation are solved for a focused Guassian beam inside two quasi-phase matched periodically poled MgO: PPLN and MgO: PPLT crystals, and the optimum focal length and radius of the continuous-wave laser beam with the wavelength of 1064 nm and with Gaussian profile, and also, the optimal phase-mismached parameter are calculated and the dependence of the second harmonic efficiency on these parameters is shown. Also, the effects of the thermal distribution inside the crystal on the second harmonic generation efficiency are investigated and it is shown how the thermal distribution reduces the second harmonic efficiency and, accordingly, the optimal crystal length for different incident powers is determined and shown that the lower crystal lengths should be selected for higher incident powers. Finally, a comparison between the second harmonic efficiencies in two crystals of MgO: PPLN and MgO: PPLT is performed considering the thermal distribution for different insident powers and it is shown that for the lower/ higher incident power than 21 watts, the crystal of MgO: PPLN / MgO: PPLT is more suitable and more efficient for second harmonic generation. In this research, the nonlinear propagation equations of the fundamental and second harmonic waves coupled to the heat equation are solved for a focused Guassian beam inside two quasi-phase matched periodically poled MgO: PPLN and MgO: PPLT crystals, and the optimum focal length and radius of the continuous-wave laser beam with the wavelength of 1064 nm and with Gaussian profile, and also, the optimal phase-mismached parameter are calculated and the dependence of the second harmonic efficiency on these parameters is shown. Also, the effects of the thermal distribution inside the crystal on the second harmonic generation efficiency are investigated and it is shown how the thermal distribution reduces the second harmonic efficiency and, accordingly, the optimal crystal length for different incident powers is determined and shown that the lower crystal lengths should be selected for higher incident powers. Finally, a comparison between the second harmonic efficiencies in two crystals of MgO: PPLN and MgO: PPLT is performed considering the thermal distribution for different insident powers and it is shown that for the lower/ higher incident power than 21 watts, the crystal of MgO: PPLN / MgO: PPLT is more suitable and more efficient for second harmonic generation. second harmonic generation Quasi phase matching Thermal distribution periodically ‎poled crystal Phase mismatch https://ijpr.iut.ac.ir/article_1653_2d10cee4b7ba5b6ac1a32dbc51826250.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Nonlinear coupling of two nonlinear coupled plasmonic nanowires in the ‎presence of Kerr and two-photon absorption in the modes of TM00 and TM10‎ Nonlinear coupling of two nonlinear coupled plasmonic nanowires in the ‎presence of Kerr and two-photon absorption in the modes of TM00 and TM10‎ 627 635 1654 10.47176/ijpr.20.4.71084 FA A Ghadi Atomic and Molecular Physics Group, Faculty of Basic Sciences, University of Mazandaran, Iran https://orcid.org/00 F Habibi Atomic and Molecular Physics Group, Faculty of Basic Sciences, University of Mazandaran, Iran S Mirzanejhad Atomic and Molecular Physics Group, Faculty of Basic Sciences, University of Mazandaran, Iran Journal Article 2020 07 02 The nonlinear interactions of coupled nanowires are important phenomena in data processing of integrated photonic circuits. In this paper, we investigate the nonlinear coupling of two silver nonlinear coupled plasmonic nanowires for TM00 and TM10 modes under different amplitudes in the presence of Kerr effect, and the other case that the medium has Kerr and two photon absorption (TPA) effect too. The results show that in the presence of TPA effect the nonlinear optical effects appear in lower input amplitudes than Kerr effect. The Kerr effect occurs in upper intensities than the TPA effect and nonlinear optical effect leads to decrease the exchange of plasmonic waves between two nanowires. Also, the coupling length (Lc), that it means the characteristic length of the structure has a lower coupling distance that through propagating in the medium the transfer of the wave is completely, in TM00 mode is lower than TM10 mode. Also, the results show that for different values of initial amplitudes of field in a fixed value of Lc, the coupling efficiency increases with increasing the value of intensity. The nonlinear interactions of coupled nanowires are important phenomena in data processing of integrated photonic circuits. In this paper, we investigate the nonlinear coupling of two silver nonlinear coupled plasmonic nanowires for TM00 and TM10 modes under different amplitudes in the presence of Kerr effect, and the other case that the medium has Kerr and two photon absorption (TPA) effect too. The results show that in the presence of TPA effect the nonlinear optical effects appear in lower input amplitudes than Kerr effect. The Kerr effect occurs in upper intensities than the TPA effect and nonlinear optical effect leads to decrease the exchange of plasmonic waves between two nanowires. Also, the coupling length (Lc), that it means the characteristic length of the structure has a lower coupling distance that through propagating in the medium the transfer of the wave is completely, in TM00 mode is lower than TM10 mode. Also, the results show that for different values of initial amplitudes of field in a fixed value of Lc, the coupling efficiency increases with increasing the value of intensity. two-photon absorption effect Kerr effect nanowire nonlinear coupling‎ https://ijpr.iut.ac.ir/article_1654_f57a749d088e43733f58707841973859.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Effective quadruple deformation of (128-160)Nd isotopic chain Effective quadruple deformation of (128-160)Nd isotopic chain 637 647 1655 10.47176/ijpr.20.4.51061 FA A Hosseinnezhad Department of Physics, University of Tabriz, Tabriz, Iran 0000-0002-3977-3962 A Jalili Majarashin Department of Physics, Liaoning Normal University, Dalian, China H Sabri Department of Physics, University of Tabriz, Tabriz, Iran P Feng Department of Physics, Liaoning Normal University, Dalian, China Journal Article 2020 05 23 The aim of this paper is to calculate the effective quadruple deformation of different levels in the Nd isotopic chain in the framework of the boson interaction model. For this purpose, by labeling the selected states in the form of the dynamic limit of U(5), the expectation value of the quadruple interaction operator is calculated and the quadruple shape invariant and the Effective quadruple deformation of levels are obtained and compared to the corresponding experimental values, the effective boson charge for each isotope has been determined. The results show the existence of overlap in the values of the effective quadruple deformation of 0_3^+ and 2_1^+ levels in this isotopic chain. Also, a certain relationship is observed between the effective quadruple deformation values and the effective Boson charge and the spacing of the levels. The existence of this dependence for the Nd isotopic chain and the overlap of quantities can be reported as signs of shape coexistence in (_60^140)Nd and (_60^142)Nd and (_60^146)Nd isotopes. The aim of this paper is to calculate the effective quadruple deformation of different levels in the Nd isotopic chain in the framework of the boson interaction model. For this purpose, by labeling the selected states in the form of the dynamic limit of U(5), the expectation value of the quadruple interaction operator is calculated and the quadruple shape invariant and the Effective quadruple deformation of levels are obtained and compared to the corresponding experimental values, the effective boson charge for each isotope has been determined. The results show the existence of overlap in the values of the effective quadruple deformation of 0_3^+ and 2_1^+ levels in this isotopic chain. Also, a certain relationship is observed between the effective quadruple deformation values and the effective Boson charge and the spacing of the levels. The existence of this dependence for the Nd isotopic chain and the overlap of quantities can be reported as signs of shape coexistence in (_60^140)Nd and (_60^142)Nd and (_60^146)Nd isotopes. quantum shape-phase transition (QPT) electric quadruple deformation shape coexistence ‎interacting boson model (IBM)‎‎ https://ijpr.iut.ac.ir/article_1655_d3096258adcd6ca6cce3e8b32e225a01.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 New Methode for Synthesis of PbO Nano-Rods and its application in ionizing radiation shielding New Methode for Synthesis of PbO Nano-Rods and its application in ionizing radiation shielding 649 655 1656 10.47176/ijpr.20.4.38211 FA S Yazdani Darki Nuclear Physics Division, Physics Department, University of Yazd, Yazd, Iran‎ M Eslami-Kalantari Nuclear Physics Division, Physics Department, University of Yazd, Yazd, Iran‎ H Zare Solid State Physics Division, Physics Department, University of Yazd, Yazd, Iran‎ Journal Article 2019 06 25 We successfully synthesized PbO nanorods by a simple and low-cost approach using Pb(CH<sub>3</sub>COO)<sub>2</sub>.3H<sub>2</sub>O, NaOH as the starting materials without any surfactants in water media at room temperature. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), and photoluminescence spectrophotometer (PL) were used to characterize the samples. The prepared nanorods had the average diameter of about 40 nm, the average length of about 6 µm and the average crystallite size of about 57 nm. PbO nanorods showed good gamma and beta attenuation; so,  they could be considered as a potential candidate for radiation shielding. We successfully synthesized PbO nanorods by a simple and low-cost approach using Pb(CH<sub>3</sub>COO)<sub>2</sub>.3H<sub>2</sub>O, NaOH as the starting materials without any surfactants in water media at room temperature. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), and photoluminescence spectrophotometer (PL) were used to characterize the samples. The prepared nanorods had the average diameter of about 40 nm, the average length of about 6 µm and the average crystallite size of about 57 nm. PbO nanorods showed good gamma and beta attenuation; so,  they could be considered as a potential candidate for radiation shielding. PbO nanorod nanomaterial ‎‏ ‏chemical synthesis radiation shielding‎ ‎‎ https://ijpr.iut.ac.ir/article_1656_aa1a52e433a3f8655d533111434dca45.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Investigation of Laser wakefield acceleration using relativistic Vlasov-‎Maxwell code Investigation of Laser wakefield acceleration using relativistic Vlasov-‎Maxwell code 657 665 1657 10.47176/ijpr.20.4.31754 FA M Ghorbanalilu Department of Physics, University of Shahid Beheshti, Tehran, Iran‎‎ S.N Razavinia Department of Physics, University of Shahid Beheshti, Tehran, Iran‎‎ Journal Article 2019 03 17 In this paper we investigate the electron laser wakefield acceleration using numerical solution of relativistic Vlasov-Maxwell equations with Semi-Lagrangian method. We found optimum pulse length to excite strong wakefields by investigation of electric fields and density variation, which caused by propagation of intense relativistic laser pulse through underdense plasma as well as average kinetic energy of electrons, for lasers with different pulse lengths. <br />   In this paper we investigate the electron laser wakefield acceleration using numerical solution of relativistic Vlasov-Maxwell equations with Semi-Lagrangian method. We found optimum pulse length to excite strong wakefields by investigation of electric fields and density variation, which caused by propagation of intense relativistic laser pulse through underdense plasma as well as average kinetic energy of electrons, for lasers with different pulse lengths. <br />   Vlasov-Maxwell semi-Lagrangian method laser wakefield acceleration optimum length ‎ ‎‎ https://ijpr.iut.ac.ir/article_1657_a00e8073c2020d617e094628c2c3a15d.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Application of the residual surface delta interaction in the /beta+ decay of (_^"40" )"Sc" nucleus Application of the residual surface delta interaction in the /beta+ decay of (_^"40" )"Sc" nucleus 667 679 1658 10.47176/ijpr.20.4.19642 FA A Yarahmadi Department of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran‎‎ V Dehghani Department of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran‎‎ S A Alavi Department of Physics, Faculty of Science, University of Sistan and Baluchestan, Zahedan, Iran‎‎ Journal Article 2019 05 11 In this paper the  beta decay of  Sc40  has been investigated. Using the eigenfunctions of the spherical oscillator the eigenvalues and eigenfunctions  of the Woods-Saxon potential with spin-orbit and Coulomb terms have been calculated. In order to obtain the more realistic nuclear wave functions, the surface delta interaction potential has been used as the residual interaction between the valence nucleons in the frame work of Tamm-Dancoff approximation (TDA) in the case of Ca40  and particle-hole Tamm-Dancoff approximation (pnTDA) in the case of Sc40 . The potential constants have been obtained by fitting the results with the experimental data. The half-life and transition probability of positive beta decay of   Sc40 have been calculated. Good greement with the   experimental data was observed. In this paper the  beta decay of  Sc40  has been investigated. Using the eigenfunctions of the spherical oscillator the eigenvalues and eigenfunctions  of the Woods-Saxon potential with spin-orbit and Coulomb terms have been calculated. In order to obtain the more realistic nuclear wave functions, the surface delta interaction potential has been used as the residual interaction between the valence nucleons in the frame work of Tamm-Dancoff approximation (TDA) in the case of Ca40  and particle-hole Tamm-Dancoff approximation (pnTDA) in the case of Sc40 . The potential constants have been obtained by fitting the results with the experimental data. The half-life and transition probability of positive beta decay of   Sc40 have been calculated. Good greement with the   experimental data was observed. beta decay Woods-Saxon potential Tamm-Dancoff approximation (TDA) surface delta ‎interaction residual interaction https://ijpr.iut.ac.ir/article_1658_05849fd2ba5eff25d4d02c2e61cb1aff.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Generation of new modes in the process of passing waves ‎through two semi-bounded waveguides with cylindrical metallic ‎wall , with a dissipative plasma rod in one of them Generation of new modes in the process of passing waves ‎through two semi-bounded waveguides with cylindrical metallic ‎wall , with a dissipative plasma rod in one of them 681 691 1659 10.47176/ijpr.20.4.15883 FA S Najari ‎‎ Faculty of Physics, Department of Photonics and Plasma, University of Kashan, Kashan, Iran B Jazi ‎‎ Faculty of Physics, Department of Photonics and Plasma, University of Kashan, Kashan, Iran Journal Article 2019 05 27 In this paper, the generation of the new modes in the problem of the transfer of the electromagnetic waves from a semi-bounded cylindrical waveguide with a metallic wall to a plasma column are investigated. An electromagnetic wave with the symmetric mode TM0j is send from a semi-bounded cylindrical dielectric waveguide to a plasma column. The plasma column is placed on the axis of another semi-bounded dielectric waveguide. Two mentioned waveguides are connected to each other in z=0. The incident wave is reflected and transmitted on the interface surface of two waveguides. The reflected and transmitted waves are considered as a series of the new modes and by using appropriate boundary conditions, the reflection and transmission coefficients of each new mode are calculated. The calculations are shown that the reflection and transmission coefficients of the reflected and transmitted waves are a function of the collision frequency of the plasma. Also, the phase different of the reflected and transmitted waves respect to the incident are shown because the reflection and transmission coefficients are obtained as a complex number. The graphs of the transmission and reflection coefficients and the graphs of the phase difference of the reflected and transmitted waves in terms of the collision frequency of the plasma are investigated. In this paper, the generation of the new modes in the problem of the transfer of the electromagnetic waves from a semi-bounded cylindrical waveguide with a metallic wall to a plasma column are investigated. An electromagnetic wave with the symmetric mode TM0j is send from a semi-bounded cylindrical dielectric waveguide to a plasma column. The plasma column is placed on the axis of another semi-bounded dielectric waveguide. Two mentioned waveguides are connected to each other in z=0. The incident wave is reflected and transmitted on the interface surface of two waveguides. The reflected and transmitted waves are considered as a series of the new modes and by using appropriate boundary conditions, the reflection and transmission coefficients of each new mode are calculated. The calculations are shown that the reflection and transmission coefficients of the reflected and transmitted waves are a function of the collision frequency of the plasma. Also, the phase different of the reflected and transmitted waves respect to the incident are shown because the reflection and transmission coefficients are obtained as a complex number. The graphs of the transmission and reflection coefficients and the graphs of the phase difference of the reflected and transmitted waves in terms of the collision frequency of the plasma are investigated. collisional plasma electromagnetic waves reflection and transmission coefficients ‎symmetric modes ‎‎ https://ijpr.iut.ac.ir/article_1659_82e378b9c87c167fdae3a4fa605814ed.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Study of spinning particles around rotating black holes‎ Study of spinning particles around rotating black holes‎ 693 698 1660 10.47176/ijpr.20.4.37971 FA J Khodagholizadeh Department of Physics, Farhangian University, Tehran, Iran ‎ A Vahedi Department of Physics, Kharazmi university, Tehran, Iran‎ ‎ Journal Article 2019 06 10 The orbital velocity profile around the Kerr black holes has a non-monotonic radial behavior in the Locally ‎Nonrotating Frames (LNRF)‎. ‎Using Mathisson- Papapetrou- Dixon equation for a massive spinning particle‎, ‎again this ‎maximum-minimum feature has been shown by considering the linear spin approximation‎. ‎Also the spin of black holes ‎and absolute value of particle's spin have an important rule ‏ ‏in Aschenbach effect‎‎.   The orbital velocity profile around the Kerr black holes has a non-monotonic radial behavior in the Locally ‎Nonrotating Frames (LNRF)‎. ‎Using Mathisson- Papapetrou- Dixon equation for a massive spinning particle‎, ‎again this ‎maximum-minimum feature has been shown by considering the linear spin approximation‎. ‎Also the spin of black holes ‎and absolute value of particle's spin have an important rule ‏ ‏in Aschenbach effect‎‎.   spinning particles ascenbach effect and blackhole physics https://ijpr.iut.ac.ir/article_1660_6038f839b5fc443daba6412a0d4ff5c2.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Comparison of polarization sensitive second harmonic generation ‎microscopy techniques for the study of biological tissues Comparison of polarization sensitive second harmonic generation ‎microscopy techniques for the study of biological tissues 699 709 1661 10.47176/ijpr.20.4.61079 FA M Alizadeh ‎‎ Department of Physics, University of Kurdistan, Sanandaj, Iran‎ ‎ M Ghotbi ‎‎ Department of Physics, University of Kurdistan, Sanandaj, Iran‎ ‎ 0000-0002-4134-7188 Journal Article 2020 06 22 Recently, polarization sensitive Second Harmonic Generation (pSHG) microscopy has become a powerful tool for the study of the noncenterosymmetric biological structures. This is due to the fact that pSHG has some intrinsically benefits such as high resolution and contrast, and it can also penetrate deeply inside the sample in a noninvasive manner. One drawback for the pSHG technique is that the imaging procedure is not fast enough to study in vivo samples or to monitor the dynamics of different tissues. This issue imposes some limitations on using the pSHG technique to study in vivo samples. Fortunately, recently Single Scan polarization sensitive Second Harmonic Generation (SS-pSHG) technique has been introduced as a fast alternative for the conventional pSHG technique. In this article, the results obtained from ex vivo biological samples of starch, human cornea and animal tendon have been compared in a pixel-to-pixel manner using pSHG and SS-pSHG techniques in forward direction. Even though the samples used here are ex vivo, the results of this study promise that the polarization sensitive SHG microscopy techniques have a great potential to study biological tissues in a noninvasive procedure. This issue is more important especially in the cases that samples are in vivo. Recently, polarization sensitive Second Harmonic Generation (pSHG) microscopy has become a powerful tool for the study of the noncenterosymmetric biological structures. This is due to the fact that pSHG has some intrinsically benefits such as high resolution and contrast, and it can also penetrate deeply inside the sample in a noninvasive manner. One drawback for the pSHG technique is that the imaging procedure is not fast enough to study in vivo samples or to monitor the dynamics of different tissues. This issue imposes some limitations on using the pSHG technique to study in vivo samples. Fortunately, recently Single Scan polarization sensitive Second Harmonic Generation (SS-pSHG) technique has been introduced as a fast alternative for the conventional pSHG technique. In this article, the results obtained from ex vivo biological samples of starch, human cornea and animal tendon have been compared in a pixel-to-pixel manner using pSHG and SS-pSHG techniques in forward direction. Even though the samples used here are ex vivo, the results of this study promise that the polarization sensitive SHG microscopy techniques have a great potential to study biological tissues in a noninvasive procedure. This issue is more important especially in the cases that samples are in vivo. medical and biological imaging nonlinear microscopy polarization second harmonic ‎generation tissue‎ ‎‎ https://ijpr.iut.ac.ir/article_1661_329f2743a8d28433186f5c31aa915ca1.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Simulation of possibility of detecting gamma rays emitted from crab by Alborz-I array Simulation of possibility of detecting gamma rays emitted from crab by Alborz-I array 711 716 1662 10.47176/ijpr.20.4.71099 FA Y Pezeshkian ‎‎1. Department of Physics, Sahand University of Technology, Tabriz, Iran ‎ 2. Alborz Observatory, Sharif University of Technology, Tehran‎, Iran ‎ 0000-0001-5932-8551 A Laletaheri Department of Physics, University of Zanjan, Zanjan‎, Iran ‎ ‎ Journal Article 2020 07 26 Crab Nebula, as an active source of high energy gamma-rays, is a common standard source used for calibrating different gamma-ray telescopes and observatories. Since gamma rays with energies above 100 TeV from crab is reported, it is possible to detect gamma rays emitted from this nebula by a suitable ground based detector array. Alborz-I array is designed to study cosmic rays with energies around the knee of cosmic ray spectrum. In this paper, it is shown that the current location and configuration of Alborz-I, makes it impossible to detect Crab gamma rays. Our simulation shows that the average rate of gamma particle detection reaches to something above 1 gamma particle in 2 years, which is very difficult to distinguish from cosmic ray background. Finally some proposals to constructing an array with capability of detecting Crab gamma rays are presented. Crab Nebula, as an active source of high energy gamma-rays, is a common standard source used for calibrating different gamma-ray telescopes and observatories. Since gamma rays with energies above 100 TeV from crab is reported, it is possible to detect gamma rays emitted from this nebula by a suitable ground based detector array. Alborz-I array is designed to study cosmic rays with energies around the knee of cosmic ray spectrum. In this paper, it is shown that the current location and configuration of Alborz-I, makes it impossible to detect Crab gamma rays. Our simulation shows that the average rate of gamma particle detection reaches to something above 1 gamma particle in 2 years, which is very difficult to distinguish from cosmic ray background. Finally some proposals to constructing an array with capability of detecting Crab gamma rays are presented. cosmic rays crab nebula Alborz observatory gamma ray astronomy‎ ‎‎ https://ijpr.iut.ac.ir/article_1662_a2b6caa70b1591231db91c9af999a0df.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Investigation of multi-quark systems Investigation of multi-quark systems 717 725 1663 10.47176/ijpr.20.4.41048 FA F Abdi Physics department, Razi University, Kermanshah G. R Boroun ‎‎ ‎ Physics department, Razi University, Kermanshah‎, Iran ‎ 0000-0002-2517-247x Journal Article 2020 04 24 In this study, the researcher decided to study Tetraquark and Pentaquark systems. We introduce the Pentaquark system as a meson-baryon system and Tetraquark as a diquark-antidiquark system. A diquark consists of two quarks. The interaction potential between these particles is considered as a combination of two color charge potentials and the confinement potential is considered as harmonic and linear sentences. Solve the Schrodinger equation by considering the effects of spin-spin, isospin- isospin, spin-isospin, and then obtain the mass of the diquark and the heavy tetraquuarks with charm quarks and bottom. These calculations are calculated using the approach of diquark - antidiquark within the framework of the non-relativistic quark model. In the following, we calculate the mass of Pentaquark systems in the same way. In this study, the researcher decided to study Tetraquark and Pentaquark systems. We introduce the Pentaquark system as a meson-baryon system and Tetraquark as a diquark-antidiquark system. A diquark consists of two quarks. The interaction potential between these particles is considered as a combination of two color charge potentials and the confinement potential is considered as harmonic and linear sentences. Solve the Schrodinger equation by considering the effects of spin-spin, isospin- isospin, spin-isospin, and then obtain the mass of the diquark and the heavy tetraquuarks with charm quarks and bottom. These calculations are calculated using the approach of diquark - antidiquark within the framework of the non-relativistic quark model. In the following, we calculate the mass of Pentaquark systems in the same way. Shrodinger equation di quark tetraquark pentaquark https://ijpr.iut.ac.ir/article_1663_c9185a63b0e4c3d0782093341ad54af3.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Warm intermediate and logamediate cosmic inflation with a constant ‎dissipation coefficient in loop quantum gravity Warm intermediate and logamediate cosmic inflation with a constant ‎dissipation coefficient in loop quantum gravity 727 735 1664 10.47176/ijpr.20.4.37311 FA A Ravanpak Department of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran‎ M R Setare Department of Science, Campus of Bijar, University of Kurdistan, Bijar, Iran Journal Article 2019 03 22 Warm inflationary model in the context of loop quantum cosmology is investigated. To this aim we consider two cases intermediate inflation and logamediate inflation. In both the cases, assuming a constant dissipation coefficient, we study the model under consideration in weak dissipation regime and also in strong dissipation regime. In each of these cases, we obtain various parameters such as potential function of inflationary scalar field and slow-roll parameters. Perturbation theory and also finding relations between perturbative parameters is studied. Warm inflationary model in the context of loop quantum cosmology is investigated. To this aim we consider two cases intermediate inflation and logamediate inflation. In both the cases, assuming a constant dissipation coefficient, we study the model under consideration in weak dissipation regime and also in strong dissipation regime. In each of these cases, we obtain various parameters such as potential function of inflationary scalar field and slow-roll parameters. Perturbation theory and also finding relations between perturbative parameters is studied. warm inflation intermediate logamediate loop quantum cosmology perturbation ‎ ‎‎ https://ijpr.iut.ac.ir/article_1664_3f68eee38e4966a7b7555f8d2e971406.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Thin accretion disks around multi-polytropic wormhole Thin accretion disks around multi-polytropic wormhole 737 746 1665 10.47176/ijpr.20.4.71085 FA M Heydari-Fard ‎‎ ‎ Department of Physics, The University of Qom, Qom, Iran‎‎ F Eghbalpoor ‎‎ ‎ Department of Physics, The University of Qom, Qom, Iran‎‎ Journal Article 2020 07 05 In this paper, we study the physical properties of thin accretion disks in static and spherically symmetric multi-polytropic wormhole space-time. Using the Novikov-Thorne model, the electromagnetic flux, temperature distribution, innermost stable circular orbits and radiative efficiency of thin disks are obtained. Comparing the results with traversable wormholes obtained by Morris and Thorne (TWH) and the Schwarzschild solution, we show that thin accretion disks around multi-polytropic wormhole geometry are more luminous and more efficient than the TWH and Schwarzschild black hole. In this paper, we study the physical properties of thin accretion disks in static and spherically symmetric multi-polytropic wormhole space-time. Using the Novikov-Thorne model, the electromagnetic flux, temperature distribution, innermost stable circular orbits and radiative efficiency of thin disks are obtained. Comparing the results with traversable wormholes obtained by Morris and Thorne (TWH) and the Schwarzschild solution, we show that thin accretion disks around multi-polytropic wormhole geometry are more luminous and more efficient than the TWH and Schwarzschild black hole. accretion disks wormhole black hole physics https://ijpr.iut.ac.ir/article_1665_4b623a26b550e9a1ec6c998dc799212f.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Conceptual design, manufacturing and investigation of dipole plasma ‎antenna with the capability of frequency variation in the VHF band Conceptual design, manufacturing and investigation of dipole plasma ‎antenna with the capability of frequency variation in the VHF band 747 758 1666 10.47176/ijpr.20.4.27821 FA M Amiri ‎‎ Department of Physics, University of Mohaghegh Ardabili, Ardabil, Iran‎‎ N Sepehri Javan ‎‎ Department of Physics, University of Mohaghegh Ardabili, Ardabil, Iran‎‎ Journal Article 2019 05 27 In this article, we simulate and manufacture a dipole plasma antenna whose frequency is variable in the VHF band. The conductive medium of antenna is the plasma created by the DC discharge in a glass tube. To excite the antenna, we use a cylindrical aluminum coupler installed at the middle of the antenna. By varying values of gas pressure, input impedance of circuit and the voltage deference between two ends of the plasma medium, one can change the working area of antenna at a few hundred gigahertz frequency interval. Simulation and numerical calculations are carried out for an antenna with 78cm length and 2cm radius at 0.8 bar pressure exerted under 15KV voltage difference. At constant pressure, by using some parallel resistors in the antenna circuit, the impedance of discharge circuit is changed and consequently the plasma density is varied. For plasma frequencies   and ,  using semi-experimental formulae, analysis shows resonances at frequencies 250MHz and 311MHz, respectively, which are in good agreement with the experimental results which take place at frequencies 217MHz and 272MHz. Additionally, simulation is accomplished for a  metal antenna with corresponding geometry whose working frequency detected at 184MHz. In this article, we simulate and manufacture a dipole plasma antenna whose frequency is variable in the VHF band. The conductive medium of antenna is the plasma created by the DC discharge in a glass tube. To excite the antenna, we use a cylindrical aluminum coupler installed at the middle of the antenna. By varying values of gas pressure, input impedance of circuit and the voltage deference between two ends of the plasma medium, one can change the working area of antenna at a few hundred gigahertz frequency interval. Simulation and numerical calculations are carried out for an antenna with 78cm length and 2cm radius at 0.8 bar pressure exerted under 15KV voltage difference. At constant pressure, by using some parallel resistors in the antenna circuit, the impedance of discharge circuit is changed and consequently the plasma density is varied. For plasma frequencies   and ,  using semi-experimental formulae, analysis shows resonances at frequencies 250MHz and 311MHz, respectively, which are in good agreement with the experimental results which take place at frequencies 217MHz and 272MHz. Additionally, simulation is accomplished for a  metal antenna with corresponding geometry whose working frequency detected at 184MHz. plasma antenna plasma plasma frequency dipole antenna plasma antenna simulation CST ‎‎ https://ijpr.iut.ac.ir/article_1666_a246f18b40ab255d0f5c337fa7b2bd6d.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Comparison of mechanical, optical and electronic transport properties of ‎isotropic and anisotropic borophosphene Comparison of mechanical, optical and electronic transport properties of ‎isotropic and anisotropic borophosphene 759 771 1667 10.47176/ijpr.20.4.11149 FA M Pashangpour ‎‎ Department of Physics, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran 0000-0002-7827-359X Journal Article 2020 11 10 In this research, mechanical, optical and electronic transport properties of two phases of graphene-like borophosphene are investigated using density functional theory. Graphene-like borophosphene, a honeycomb structure with equal ratio of boron and phosphorus atoms, is introduced in two isotropic and anisotropic phases. For this purpose, band structure, partial density of states, Young’s modulus, Poisson ratios, dielectric function, and current-voltage characteristics are calculated and compared. The results show that the anisotropic phase of graphene-like borophosphene is semimetal and the isotropic phase is a semiconductor with a direct energy gap of 0.9 eV. Moreover, the Young’s modulus has the highest values for both phases in the zigzag and armchair directions of crystal, and the Poisson ratio has the lowest values in these two directions. Besides, optical properties of these two structures include electron energy loss spectroscopy, refractive index, extinction coefficient, optical conductivity and reflection coefficient for parallel and perpendicular polarization of electric fields respect to the sheets are computed by real and imaginary parts of dielectric function using random phase approximation. Plasmon’s energies are obtained 2.24 and 8.88 eV in the armchair direction and 9.01 eV in the zigzag direction for the anisotropic phase and for the isotropic phase, 3.38 and 9.12 eV are obtained in both directions. Both phases are transparent respect to visible light polarized in the perpendicular direction to the crystal, and the reflection and absorption are zero. Due to the selective transmission / absorption / reflection of the electromagnetic wave in the crystals, this material is suggested as a suitable candidate in the fabrication of nano optoelectronic devices. Furthermore, Ohmic behavior is observed in current-voltage characteristics of the isotropic phase after the threshold bias voltage of 0.9 V. As a result of the high Fermi velocity of charge carriers in the anisotropic phase of borophosphene ( ), this material can be used in nanoelectronic devices. In this research, mechanical, optical and electronic transport properties of two phases of graphene-like borophosphene are investigated using density functional theory. Graphene-like borophosphene, a honeycomb structure with equal ratio of boron and phosphorus atoms, is introduced in two isotropic and anisotropic phases. For this purpose, band structure, partial density of states, Young’s modulus, Poisson ratios, dielectric function, and current-voltage characteristics are calculated and compared. The results show that the anisotropic phase of graphene-like borophosphene is semimetal and the isotropic phase is a semiconductor with a direct energy gap of 0.9 eV. Moreover, the Young’s modulus has the highest values for both phases in the zigzag and armchair directions of crystal, and the Poisson ratio has the lowest values in these two directions. Besides, optical properties of these two structures include electron energy loss spectroscopy, refractive index, extinction coefficient, optical conductivity and reflection coefficient for parallel and perpendicular polarization of electric fields respect to the sheets are computed by real and imaginary parts of dielectric function using random phase approximation. Plasmon’s energies are obtained 2.24 and 8.88 eV in the armchair direction and 9.01 eV in the zigzag direction for the anisotropic phase and for the isotropic phase, 3.38 and 9.12 eV are obtained in both directions. Both phases are transparent respect to visible light polarized in the perpendicular direction to the crystal, and the reflection and absorption are zero. Due to the selective transmission / absorption / reflection of the electromagnetic wave in the crystals, this material is suggested as a suitable candidate in the fabrication of nano optoelectronic devices. Furthermore, Ohmic behavior is observed in current-voltage characteristics of the isotropic phase after the threshold bias voltage of 0.9 V. As a result of the high Fermi velocity of charge carriers in the anisotropic phase of borophosphene ( ), this material can be used in nanoelectronic devices. graphene-like borophosphene density functional theory Young’s modulus dielectric ‎function electronic transport‎ ‎ ‎‎ https://ijpr.iut.ac.ir/article_1667_ab7ae9eefe3d2c8dbbbd88e675a1acbf.pdf
Isfahan University of Technology, The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 20 4 2021 02 19 Relativistic electron dynamics in ion channel guiding in the presence of a helical ‎wiggler and an external oblique magnetic field ‎ Relativistic electron dynamics in ion channel guiding in the presence of a helical ‎wiggler and an external oblique magnetic field ‎ 773 778 1668 10.47176/ijpr.20.4.1072 FA A Kargarian ‎‎ Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, ‎Iran Journal Article 2019 06 17 In this paper, the electron acceleration and its relativistic dynamics in an ion-channel formed due to the laser pulse propagation through the plasma and under influence of the ion channel space-charge and a heliacal wiggler as well as the oblique magnetic field have been investigated. The equations for investigation of the electron dynamics are the tree-dimension Lorentz equations. For analytical analysis of the obtained equations, a three-dimension single particle code and forth order Runge-Kutta method is used as well. The electron energy gain and the relativistic electron dynamics drastically are affected by the ion-channel potential and the helical wiggler and also the external oblique magnetic field. The results of this paper can be significant in the selection of the appropriate parameters for plasma-based accelerators design. In this paper, the electron acceleration and its relativistic dynamics in an ion-channel formed due to the laser pulse propagation through the plasma and under influence of the ion channel space-charge and a heliacal wiggler as well as the oblique magnetic field have been investigated. The equations for investigation of the electron dynamics are the tree-dimension Lorentz equations. For analytical analysis of the obtained equations, a three-dimension single particle code and forth order Runge-Kutta method is used as well. The electron energy gain and the relativistic electron dynamics drastically are affected by the ion-channel potential and the helical wiggler and also the external oblique magnetic field. The results of this paper can be significant in the selection of the appropriate parameters for plasma-based accelerators design. Relativistic dynamics magnetized ion channel helical wiggler external oblique magnetic field https://ijpr.iut.ac.ir/article_1668_111e1e8f98980d0cdc03d4899daa7375.pdf