钨中氘热脱附特性的定量研究  

Quantitative Study on Thermal Desorption of Deuterium in Tungsten

作　　者：王维[1,2] 张学希[3] 叶小球 陈长安[2] 王鹏[3] 周燕燕[2] 高涛 Wang Wei;Zhang Xuexi;Ye Xiaoqiu;Chen Chang'an;Wang Peng;Zhou Yanyan;Gao Tao(Sichuan University,Chengdu 610065,China;Science and Technology on Surface Physics and Chemistry Laboratory,Jiangyou 621908,China;State Key Laboratory of Solid Lubrication,Lanzhou Institution of Chemical Physics, Chinese Academy of Sciences,Lanzhou 730050,China)

机构地区：[1]四川大学,四川成都610065 [2]表面物理与化学重点实验室,四川江油621908 [3]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730050

出　　处：《稀有金属材料与工程》2018年第12期3735-3740,共6页Rare Metal Materials and Engineering

基　　金：国家磁约束聚变计划专项(2015GB109002);国家自然科学基金青年基金(21401173);中国工程物理研究院科学技术发展基金(2014B0301048)

摘　　要：采用热脱附谱方法定量研究了多晶W经能量为100eV/D、注量为3.8×1024D/m^2的D+辐照作用后,不同升温速率下氘的热脱附特性。研究发现,氘的热脱附量在不同升温速率下均为1022 D/m^2量级,随着升温速率的增大,氘的热脱附峰峰位向高温方向移动。多晶W中氘的热脱附行为符合一级反应特征,钨中空位是氘在钨中的主要俘获态,氘原子的热脱附能为1.04 eV。The polycrystalline W was irradiated with 100eV D^+ ions to the fluence of 3.8×10^24D/m^2.And the subsequent thermal desorption characteristics of deuterium from W at different heating rates were investigated by thermal desorption spectroscopy.The results show that the total amount of deuterium desorption is about 10^22D/m^2 orders of magnitude.In particular,the thermal desorption peaks can shift to higher temperature side with the increase of heating rate.The thermal desorption behavior of deuterium in polycrystalline W is in accord with the first order reaction.The vacancy formation is the main trapping state of deuterium,and the thermal desorption energy of deuterium atom is 1.04eV.

关 键 词：钨 氘 热脱附 热脱附能 辐照缺陷 空位 

分 类 号：TL627[核科学技术—核技术及应用]