Deuterium retention in rhenium-doped tungsten
Deuterium retention in rhenium-doped tungsten
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DOI：
10.1016/j.jnucmat.2007.01.110
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发表时间：
2007-06
影响因子：
3.1
通讯作者：
A. Golubeva;M. Mayer;J. Roth;V. Kurnaev;O. Ogorodnikova
中科院分区：
文献类型：
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作者：
A. Golubeva;M. Mayer;J. Roth;V. Kurnaev;O. Ogorodnikova
采用热脱附技术研究了掺铼钨（W-Re）中氘的保留。研究了不同结构和不同Re浓度的W-Re合金。所有的钨铼合金都有一个共同的结构特征——体中有微米大小的空隙。用200eV氘离子辐照样品，辐照量为1022 ~ 1024d /m2。用5K/s的线性斜坡测量多晶W的热脱附光谱，在~ 450和650K处有两个峰。在W-Re合金的TDS中，在850K处发现了一个额外的高温峰。W-Re合金中所观察到的滞留与材料结构密切相关。在1 ~ 10%Re掺量范围内，W-Re合金中Re浓度对氘的保留率影响不明显。发现在退火和低能氘辐照下都发生了结构变化（材料中空隙的填充）。
Deuterium retention in rhenium doped tungsten (W–Re) was investigated by means of the thermodesorption technique. W–Re alloys of different structures and concentrations of Re were investigated. All tungsten rhenium alloys had a common structural feature – micron size voids in the bulk. The samples were irradiated by 200eV deuterium ions in the fluence range 1022–1024D/m2. The thermodesorption spectra of polycrystalline W measured with a linear ramp of 5K/s has two peaks at ∼450 and 650K. In TDS of W–Re alloys an additional high-temperature peak was found at 850K. The observed retention in W–Re alloys depends strongly on materials structure. In the range of 1–10%Re admixture the Re concentration in W–Re alloy does not influence noticeably the deuterium retention. Structure changes (filling of voids in material) was found to take place both at annealing and low-energy deuterium irradiation.