基本舰船结构的辐射屏蔽因子研究  

Research on radiation protection factors of basic ship structures

作　　者：张芳[1] 董志伟[1] 柴辰睿 周海京[1] 安建祝[1] 赵强[1] 薛碧曦 Zhang Fang;Dong Zhiwei;Chai Chenrui;Zhou Haijing;An Jianzhu;Zhao Qiang;Xue Bixi(Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]北京应用物理与计算数学研究所,北京100094 [2]华北电力大学电气与电子工程学院,北京102206

出　　处：《强激光与粒子束》2024年第12期121-128,共8页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(12205024)。

摘　　要：核辐射环境中,舰船、坦克的辐射屏蔽特性关乎着核安全、防护、效应评估以及决策应对等实际应用问题。瞄准舰船的核辐射屏蔽性能开展研究。针对舰船材料及典型结构,采用中子-光子耦合输运方法,定量给出中子源、γ源同时辐照下的辐射屏蔽效能。通过借助大规模并行技术,实现了该深穿透屏蔽问题的高效模拟。该辐照屏蔽研究中考虑了入射中子和γ以及次级γ粒子的综合叠加效应。通过模拟中子和γ分别入射不同厚度、不同材料壳体后的注量、剂量、能谱演化,计算获得了屏蔽体的入射中子、入射γ射线、中子和次级γ及其综合屏蔽因子,给出腔内的屏蔽因子分布规律,材料包括Fe、Al、Pb、船体材料HSLA100钢等,辐射源包括单能中子、单能γ以及核泄漏中子谱和γ谱。研究成果将为船体、坦克等的辐射防护性能的深入分析奠定基础,为核辐射效应评估、应急处理等提供理论支撑。In nuclear radiation environment,the radiation protection of vehicles such as ships and tanks is crucial for nuclear safety,radiation protection,radiation damage assessment,response and decision-making.This paper does research on ships’radiation shielding performance.Using ship materials and typical structures,neutronphoton coupling transportation method is adopted to quantitatively simulate ship’s radiation shielding performance,under neutron andγ’simultaneous irradiation.By utilizing large-scale parallel technology,efficient simulation has been achieved for deep-penetrating problem.The simulation of radiation transportation process considers incident neutrons,γand even secondary particles.For basic shape models such as plate,cavity with different thicknesses and materials,it simulates neutron andγ's transportation in gas and materials,monitors particles flux,dose,and energy spectrum.The radiation protection factors(RPF)for neutrons,γrays,and both are simulated and analyzed.It studies RPF influence rules with key parameter such as plate thicknesses,incident angles.The materials researched include Fe,Al,Pb,HSLA100 steel,and the radiation sources include single energy neutron,and nuclear leaked neutron andγspectra.These results will contribute to the analysis of vehicles’radiation protection performance,and provide theoretical support for nuclear radiation effect assessment,emergency response,etc.

关 键 词：中子 伽马 辐射屏蔽因子 舰船材料 腔体 板材 

分 类 号：O571.33[理学—粒子物理与原子核物理]