Calculation and verification of multi-MeV photon scattering coefficient

被引：0
|
作者：
Li, Chen [1 ,2 ]
Hou, Lina [2 ]
Ling, Songyun [2 ]
Zhu, Guoping [2 ]
Deng, Yanli [2 ]
Miao, Qitian [2 ,3 ]
Li, Junli [3 ]
Zhang, Hui [3 ]
机构：
[1] Adv Energy Sci & Technol Guangdong Lab, Adv Nucl Energy Team, Huizhou 516007, Peoples R China
[2] NUCTECH Co Ltd, Radiat Protect Ctr, Beijing 102413, Peoples R China
[3] Tsinghua Univ, Dept Engineer Phys, Beijing 102413, Peoples R China
来源：
RADIATION PHYSICS AND CHEMISTRY | 2023年 / 212卷
关键词：
Scattering coefficient; Geant4; Multi-MeV Photon; Radiation shielding calculation; Radiation shielding design;
D O I：
10.1016/j.radphyschem.2023.111190
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is necessary to estimate the scattering radiation contribution accurately and quickly in the radiation shielding calculation and design, and the photon scattering coefficient is a key parameter in this process. In real engineering applications, the radiation source is typically a multi-MeV photon beam, however, it can be challenging to determine precise parameters from the available literature. In this work, we used the Geant4 Monte Carlo code to simulate the scattering coefficients of monoenergetic photons with incident energies between 0.01 and 20 MeV at all angles of reflection with different scattering materials and thickness, and built a database, the Geant4 simulated results are in good agreement with the literature data. It then presents an algebraic approach and develops a MATLAB program to calculate multi-MeV photon scattering coefficient based on monoenergetic photon scattering coefficient simply by importing the photon spectrum. The results calculated using this approach basically coincide with Geant4 simulation, and agree well with the experimental results within the error range allowed. We can more accurately estimate the scattering radiation dose at the point of interest with the aid of a theoretical formula through this approach, thus significantly improve the computational efficiency in engineering radiation shielding calculation and design.
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页数：5
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