Akademik Veri Yönetim Sistemi
Journal of the Korean Physical Society, cilt.83, sa.7, ss.527-536, 2023 (SCI-Expanded)
The aim of the present study is to obtain dose distributions of gel dosimeters at 6 and 18 MV photon energies and 6, 9, 12, 15, and 18 MeV electron energies using the GATE simulation program and to compare the resulting radiological features with the results experimentally obtained for liquid water and the international dose protocol suggested by the IAEA. Furthermore, in this study, the fast neutron removal cross-sections (ΣR) and attenuation lengths of gel dosimeters have been calculated. The effects on the absorbed dose distributions due to variation in the effective atomic number, mass attenuation coefficient, and effective photon energy are calculated for MAGIC, MAGAS, MAGAT, LMD1, LMD2, FAX, FXG, PAKAG formulations at irradiations with photon and electron beams. In the present study, mass attenuation coefficient values calculated for mono energies of 6 and 18 MV were compared with the values acquired by GATE, XCOM, PhyX-PSD, EpiXS, and XMuDat softwares for the same energies. In addition, spectrum values of the multi-energetic photon energies of 6 and 18 MV were drawn from the LINAC device database and introduced to GATE, and mass attenuation coefficient values of the gel dosimeters in the spectrum energy were calculated. In the 6 and 18 MV energy photon energy, MAGAS and FAX were found to have the lowest difference compared to water. Mean dose differences of MAGAS and FAX were obtained as 0.76 ± 0.69 and 1.74 ± 0.59, respectively. Mean dose differences of the gel dosimeters compared with water did not exceed 3% in both energy types. The study shows that, as a result of the simulation, software programs, the new approach, and theoretical calculations, it was found that the values obtained for effective atomic number and mass attenuation coefficient were compatible with liquid water.