电子能损效应对材料辐照缺陷影响的理论模拟研究进展  

Progress on theoretical simulation study of the influence of electronic energy loss on the irradiation defects of materials

作　　者：徐姜炜 张超[1] 毛飞[2] 张丰收[3] XU Jiangwei;ZHANG Chao;MAO Fei;ZHANG Fengshou(School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China)

机构地区：[1]安徽理工大学材料科学与工程学院,淮南232001 [2]南华大学核科学技术学院,衡阳421001 [3]北京师范大学核科学与技术学院,北京100875

出　　处：《核技术》2023年第12期99-112,共14页Nuclear Techniques

基　　金：国家自然科学基金(No.11505003);安徽省自然科学基金(No.2108085MA25)。

摘　　要：高能粒子与靶材料相互作用主要通过核能损和电子能损两种方式损失能量。电子阻止效应和电子-声子耦合效应是体现电子能损的两种不同机制。准确模拟高能粒子的辐照损伤过程,亟须解决电子能损效应对粒子辐照损伤的影响这一关键科学问题。本文综述了几种关键结构材料在考虑电子能损效应下辐照损伤行为的最新研究进展,阐述了电子阻止效应、电子-声子耦合效应和电子热导率等对辐照缺陷的影响规律,总结了目前电子能损效应对靶材料辐照损伤的影响规律,归纳了高能粒子辐照靶材料研究中存在的问题,并对后续的研究方向进行了展望。Energy loss during interactions between high-energy particles and target materials mainly consists of nuclear and electronic energy losses.Electronic stopping and electron-phonon coupling effects are two different mechanisms that reflect electronic energy loss effects.To accurately simulate the irradiation damage process of highenergy particles,it is necessary to solve the key scientific problem of the influence of electronic energy loss on irradiation damage.This paper reviews the most recent progress on the irradiation damage behavior study of several key structural materials under the influence of electronic energy loss effects,elaborates the effects of electronic stopping,electron-phonon coupling,and electronic thermal conductivity on irradiation defects.The influence laws of electronic energy loss effects on the irradiation damage of target materialsare summarized and the existing problems in the research of high-energy particle irradiation of target materials are highlighted.Finally,the prospectives are outlined for future research directions.

关 键 词：电子能损效应 辐照缺陷 双温度模型 电子-声子耦合 级联碰撞 

分 类 号：TL329[核科学技术—核技术及应用]