Open AccessPreliminary Empirical study of the Rayleigh to Compton scattering ratio for elements at gamma energy 59.5 keV using Si(Li) detector
Author(s) -
Trần Thiện Thanh,
Van Tan Phat,
Lê Hoàng Minh,
Huỳnh Đình Chương,
Vo Hoang Nguyen,
Nguyen Tri Toan Phuc,
Lê Quang Vương,
Nguyen Duy Thong,
Châu Văn Tạo
Publication year - 2020
Publication title -
khoa học và công nghệ: tự nhiên
Language(s) - English
Resource type - Journals
ISSN - 2588-106X
DOI - 10.32508/stdjns.v4i2.857
Subject(s) - compton scattering , effective atomic number , rayleigh scattering , physics , atomic number , atomic physics , attenuation , gamma ray , nuclear physics , scattering , radiation , atomic mass , photon , detector , electron , computational physics , optics
The characteristic parameters of a material relation to photon interactions such as: mass attenuation coefficient, effective atomic number, effective electron density are required to provide essential data in diverse works such as nuclear diagnostic and cancer radiotherapy, industrial irradiation, radiation dosimetry, radiation protection and shielding, analyzing of the concentration of elements and radioactive isotopes. In this paper, the theoretical models such as non-relativistic form factor (NRFF), relativistic form factor (RFF), and modified form factor (MFF) were used to calculate the ratio Rayleigh-Compton for elements with at gamma energy 59.5 keV. The results showed that there was a discrepancy between the theoretical modes at a high atomic number. The mean value of the Rayleigh-Compton ratio depends on the atomic number, which shows the quadratic function of the correlation coefficient R2 = 0.996 as well. Besides, the experimental system was set-up and measured for some targets such as aluminum, copper, and lead at a scattering angle 150o using 241Am source by Si(Li) detector to confirm the theoretical values. The preliminary result showed that there was a good agreement with experimental and theoretical results is lower than 20%. Further investigation will be measured by the samples for more detailed evaluation.