Investigation of the pinch-time dependence to the gas pressure, in Filippov type plasma focus devices

Amirhamzeh Tafreshi, Mohammad; Rostamifard, Dariush; Nasiri, Ali

doi:10.29252/ijpr.17.4.507

Investigation of the pinch-time dependence to the gas pressure, in Filippov type plasma focus devices

Authors

Mohammad Amirhamzeh Tafreshi

Dariush Rostamifard

Ali Nasiri

https://doi.org/10.29252/ijpr.17.4.507

Abstract

Abstract: This paper has been prepared by using experimental and simulated data due to a large and a small Filippov type plasma focus devices. In the first part of the paper, the plasma-focusing phenomenon is introduced and the parameters of the devices are presented. Then the results of empirical studies of the pinch-time dependence to the gas pressure are provided. In the next part, the theoretical basis of the ML-model is reviewed and the results of applying this model to simulate the two devices are presented. Both simulated and experimental results showed that in the larger device, the pinch time is clearly more sensitive to the pressure variations. The study also showed that the model predictions for larger device are more accurate than the predictions for the smaller device.

Keywords

Keywords: Plasma focus

Filippov

ML model

gas pressure

pinch time

1- N V Filippov, T I Filippova and V P Vinogradov, Nuclear fusion suppl. 2 (1962) 577.
2- J W Mather, Phys. Fluid suppl. 7 (1964) 5.
3- L. Soto, Plasma Control. Fusion, 47(2005) 361-381.
4- N.V. Filippov, T.I. Filippova, A.N. Filippov, M.A. Karakin, E.Yu. Khautiev, V.I. Krauz, V.V. Mialton. S.A. Nikulin, V.P. Tykshaev, and V.P. vinogradov, Czech. J. of Physics, 50 (2000) 127.
5- J.O. Pouzo and M. M. Milanese, IEEE Trans. Plasma Sci., 6 (2003) 1237- 1242.
6- R. Gratton, A.R. Piriz, Nuclear Fusion, 26 (1986) 483.
7- C.K. Choi, L.T. Cox, G.T. Nakafuji, Proc. of IEEE Symp. on Fusion Eng., 30 Sep. - 5 Oct., 2 (1995), 1251-1253.
8- B. Temple, O. Barnouin, and G.H. Miley, Fusion Science and Technology, 19 (1991) 846-851.
9- Y. Kato, I. Ochiai, Y. Watanabe and S. Murayama, J. Vac. Sci. Technol. B 6 (1988) 195.
10- S. Lee, V. Kudryashov, P. Lee, G. Zhang, A. Serban. M. Liu, X. Feng, S.V. Springham. T.K.S. Wong, and C. Selvam, ICPP&25th EPS Conf. on Contr. Fusion and Plasma Physics, Praha, 29 June – 3 July. ECA 22 (1998) 2591-2594.
11- Vladymir A. Gribkov, Nukleonika 45 (2000) 149-153.
12- L.I. Ivanov, V.N. Pimenov, S.A. Maslyaevet, Elena V. Dyomina, Vladimir A. Gribkov, Franco Mezzetti, Paola DeChiara, and Linda Pizzo, Nukleonika, 45 (2000) 203-207.
13- Chhaya R. Kant, M. P. Srivastava, and R.S. Rawat, Physics Letters A. 239 (1998) 109-114.
14- R.S. Rawat, T. Zhang, K.S. Thomas Gan, P. Lee, and R.V. Ramanujan, Applied Surface Science, 253 (2006) 1611-1615.
15- V. I. Krauz, M.G. Levashova, M.A. Karakin, O.N. Krokhin, V.S. Lisitsa, A.N. Mokeev, V.V. Myalton, V.Ya Nikulin, A.V. Oginov. V.P. Smirnov, and V.E. Fortov, Plasma Physics Reports, 34 (2008) 43-51.
16- S. Lee, Journal of Fusion Energy, 33 (2014), 319-335.
17- V. Siahpoush, M.A. Tafreshi, S. Sobhanian, and S. Khorram, Plasma Phys. and Control. Fusion 47 (2005) 1065-1075.
18- V. Damideh, M. A. Tafreshi, A. Heidarnia, A. Asle-Zaeem, A. Sadighzadeh, J. Fusion Energ. 30 (2011) 462–465.
19- T.D. Mahabadi and M.A. Tafreshi, Plasma Phys. and Control. Fusion, 49 (2007) 1447-1455.