基于蒙特卡罗方法的核事故碎块辐射场模拟计算  

Simulation Calculation of Radiation Field of Nuclear Accident Debris Based on Monte Carlo Method

作　　者：王浩伟 蔡幸福 郭晓辉 霍勇刚 WANG Haowei;CAI Xingfu;GUO Xiaohui;HUO Yonggang(Rocket Force University of Engineering,Xi’an 710025,Shaanxi)

机构地区：[1]火箭军工程大学,陕西西安710025

出　　处：《火箭军工程大学学报》2024年第2期32-38,共7页Journal of Rocket Force University of Engineering

基　　金：国家部委科研基金(50926050408,QN06202)。

摘　　要：针对核事故产生的材料碎块可能会沾染放射性物质的问题,为弥补之前研究中未涉及的碎块辐射场分布水平的不足,分析了其分布的影响因素,基于蒙特卡罗法,利用SuperMC程序分别研究了核事故碎块姿态、碎块被土壤掩埋的深度、碎块材料分层截面形状对辐射场分布的影响。结果表明:碎块姿态主要影响辐射场的分布形状;碎块掩埋深度会对辐射剂量率造成较大影响,碎块在被土壤完全掩埋后,其地面剂量率峰值比完全裸露时低2个数量级;分层截面形状的影响较小。To compensate for the lack of previous studies on the radiation field distribution level of debris,fragments of materials generated by nuclear accidents and be contaminated with radioactive substances,this paper utilized the Monte Carlo method and employed the SuperMC program to investigate how factors such as debris attitude,soil burial depth,and stratified cross-sectional shape influence the distribution of radiation fields.Results indicated that the debris atti-tude mainly affects the distribution shape of the radiation field.The soil burial depth has a signifi-cant impact on the radiation dose rate.After the debris are completely buried in the soil,the peak of radiation dose of the ground is two orders of magnitude lower than that when the debris are completely exposed.The influence of stratified cross-sectional shape is relatively small.

关 键 词：辐射场 蒙特卡罗法 核事故应急 模拟计算 

分 类 号：O571.51[理学—粒子物理与原子核物理]