| 论文简介 |
分别采用分出截面法和积累因子法计算了水下放射性源透过一次屏蔽体的中子与γ射线的剂量场分布,并在这些分布条件下，利用Geant4软件γ射线在穿越二次屏蔽体后继而穿越后续水层，计算出在3 m水层中产生的切伦科夫(Cherenkov)光通量分布和光谱分布。以纯水为传播介质，在考虑Cherenkov光在不同水层中传播所造成的几何衰减和水层吸收等因素后,由计算获得了Cherenkov光光斑大小和强度分布。
The removal cross section method and the buildup factor method have been used to calculate the dose equivalent distribution of neutron and gamma rays permeating through the primary shielding layer of underwater radiator respectively. With this distribution, Cherenkov light spectrum and flux distribution in 3 m water layer radiator after γ-rays permeating through secondary shielding layer and follow-up water layer have been simulated with Geant4. In addition, considering the geometry dilution and water attenuation for Cherenkov light propagating through some thickness of the pure water layer, the size of Cherenkov light spot and the intensity distribution were obtained.
放射源 切伦科夫辐射 分出截面法 积累因子法 Geant4模拟
radioactive source Cherenkov radiation removal cross section method buildup factor method Geant4 simulation
Liu Bin,Jia Qinggang,Zhang Tiankui,Hu Guang,Hu Huasi. Monte Carlo simulation of Cherenkov light spot produced by underwater radioactive source[J]. High Power Laser and Particle Beams, 2013, 25(1): 196～200
刘斌,贾清刚,张天奎,胡光,胡华四. 水下切伦科夫光光斑的蒙特卡罗模拟[J]. 强激光与粒子束, 2013, 25(1): 196～200
DOI 10.3788/hplpb20132501.0196
http://www.hplpb.com.cn/CN/10.3788/HPLPB20132501.196
或 http://www.hplpb.com.cn/CN/Y2013/V25/I01/196 |
(创新港)
