Carbon behavior on tungsten surface after carbon and hydrogen mixed beam irradiation
Carbon behavior on tungsten surface after carbon and hydrogen mixed beam irradiation
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DOI：
10.1016/j.jnucmat.2004.04.180
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发表时间：
2004-08-01
影响因子：
3.1
通讯作者：
Nishikawa, M
中科院分区：
文献类型：
--
作者：
Shimada, T;Funabiki, T;Nishikawa, M
用XPS研究了氢碳混合离子束辐照钨后，钨表面碳的行为。表面层附近原子成分的深度分布取决于束中碳离子的浓度为0.1%或0.8%，束通量为3 x 10（22）/m（2）至3 x 10（24）/m（2）。碳浓度在当地的峰值增加，增加光束能量密度。将实验结果与EDDY程序模拟结果进行了比较。在653 K温度下，模拟结果与实验结果定性一致，除了顶部表面附近。在高温下的模拟中，由于热扩散，碳轮廓急剧膨胀到体层中。但在实验中，当温度达到913 K时，没有观察到碳分布随温度的这种膨胀。(C)2004 Elsevier B. V.保留所有权利。
The carbon behavior near the surface layer of tungsten after hydrogen and carbon mixed ion beam irradiation was investigated with XPS. Depth profiles of atomic components near the surface layer depended on the concentration of carbon ions in the beam of 0.1% or 0.8% and beam fluence from 3 x 10(22)/m(2) to 3 x 10(24)/m(2). Carbon concentration at the local peak increased with increasing beam fluence. Comparison of the experimental results with the simulation results with EDDY code was performed. At the temperature of 653 K, the simulation results qualitatively corresponded to the experimental results except near the top surface. In the simulation at high temperatures, carbon profile drastically expanded into the bulk layer due to thermal diffusion. But in the experiment, such expansion of the carbon distribution with the temperature was not observed for temperature up to 913 K. (C) 2004 Elsevier B.V. All rights reserved.