TY - JOUR
ID - 3358
TI - Calculation of photon absorbed dose kernel in a homogeneous water phantom by Monte Carlo Geant4 toolkit
JO - Iranian Journal of Physics Research
JA - IJPR
LA - en
SN - 1682-6957
AU - Tabaei, Keyvan
AU - Shamsaei Zafarghand,, Mojtaba
AD - Energy Engineering and Physics Department, Amirkabir University of Technology, P.O.BOX: 4413-15875, Tehran, Iran
Y1 - 2023
PY - 2023
VL - 23
IS - 1
SP - 65
EP - 72
KW - absorbed dose kernel
KW - dose distribution calculation
KW - convolution
KW - GEANT4 toolkit
DO - 10.47176/ijpr.23.1.81563
N2 - Nowadays, convolution/superposition(C/S) is used to calculate absorbed dose distribution by using the absorbed dose kernel(ADK). ADK describes the absorbed dose distribution per number of interaction at a small volume around the point of photon interaction. The purpose of this study is to calculate ADK and investigate its angular and radial behavior. In this study, ADK is calculated in a homogeneous water phantom in the polar coordinates by using the Monte Carlo Geant4 toolkit for monoenergetic photons with energies in the range 0.3MeV-5MeV. To study accurately, ADK is divided into several groups in order of produced charged particle set in motion at each photon interaction. Our result shows ADK rapidly decreases as the polar angle, with respect to the incident photon direction, is increased. As the radial distance from the interaction point increases, ADK is raised and then strongly decreased. ADK is symmetrically distributed around the point of interaction for low incident photon energy while forward distributed for high incident energy photons.
UR - https://ijpr.iut.ac.ir/article_3358.html
L1 - https://ijpr.iut.ac.ir/article_3358_c78897a5adb50e31ed497c4d9d46f90f.pdf
ER -