王维,张学希,叶小球,陈长安,王鹏,周燕燕,高涛.钨中氘热脱附特性的定量研究[J].稀有金属材料与工程,2018,47(12):3735~3740.[wangwei,zhangxuexi,yexiaoqiu,chenchangan,wangpeng,zhouyanyan,gaotao.Quantitative study on thermal desorption of deuterium in tungsten[J].Rare Metal Materials and Engineering,2018,47(12):3735~3740.]
钨中氘热脱附特性的定量研究
投稿时间:2017-04-18  修订日期:2017-06-08
中文关键词:      热脱附  热脱附能  辐照缺陷  空位
基金项目: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)资助
中文摘要:
      金属钨(W)是未来聚变堆反应环境中面向等离子体的主要候选材料之一,开展W中氢同位素输运和滞留行为的定量研究,对评估钨的服役性能及聚变堆燃料的物料平衡至关重要。本工作采用热脱附谱方法定量研究了多晶W经能量为100 eV/D、注量为3.8×1024 D/m2的D+辐照作用后,在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 D2/m2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,D原子的热脱附能为1.04 eV。
Quantitative study on thermal desorption of deuterium in tungsten
英文关键词:Tungsten  Deuterium  Thermal desorption  Thermal desorption energy  Radiation defects  Vacancies
英文摘要:
      Tungsten (W) is one of the primary plasma-facing materials candidate for fusion reactor in the future. It is very significant to carry out a quantitative study on the movement and retention behavior of hydrogen isotopes in W, since it can be used to evaluate the service performance of tungsten and the material balance of fusion reactor fuel. In this work, polycrystalline W was irradiated with 100 eV D+ ions to the fluence of 3.8 × 1024 D/m2. And the subsequent thermal desorption characteristics of polycrystalline W at different heating rates were investigated by thermal desorption spectroscopy. The tota amount of deuterium desorption is about 1022 D2/m2 orders of magnitude. In particular, the thermal desorption peaks can shift to higher temperature side as the increase of heating rate. The thermal desorption behavior of deuterium in polycrystalline W is in accord with the first order reaction. The vacancies formation is the main trapping state of deuterium, and the thermal desorption energy of D atom is 1.04 eV.
作者单位E-mail
王维 四川大学原子与分子物理研究所 1358372882@qq.com 
张学希 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  
叶小球 表面物理与化学重点实验室 yexiaoqiu@caep.cn 
陈长安 表面物理与化学重点实验室  
王鹏 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  
周燕燕 表面物理与化学重点实验室  
高涛 四川大学原子与分子物理研究所 gaotao@scu.edu.cn 
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