Helium plasma irradiation on single crystal tungsten and undersized atom doped tungsten alloys

被引：30
作者：
Kajita, Shin [1 ]
Yoshida, Naoaki [2 ]
Ohno, Noriyasu [3 ]
Hirahata, Yuki [3 ]
Yoshihara, Reiko [2 ]
机构：
[1] Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan
[2] Kyushu Univ, Appl Mech Res Inst, Fukuoka 8168580, Japan
[3] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
来源：
PHYSICA SCRIPTA | 2014年 / 89卷 / 02期
基金：
日本学术振兴会;
关键词：
tungsten; helium plasma; nanostructure; single crystal tungsten; tungsten alloy; LOW-ENERGY; NAGDIS-II; SURFACE;
D O I：
10.1088/0031-8949/89/02/025602
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Helium plasma irradiation leads to the formation of nanostructures on the surface when certain conditions are satisfied. The surface morphology changes due to helium plasma irradiation were investigated on single crystal tungsten samples with different crystal orientations. Differences in surface morphology changes were observed in (100) and (110) single crystal tungsten samples when the helium fluence was less than 10(25) m(-2). However, the differences disappeared as growth proceeded. Tungsten alloys were prepared in order to investigate the influence of the additional undersized atomic species on nanostructure growth. The influence of the doping of undersized atoms, i.e. 2 at% Fe doped and 2 at% Cr doped atoms, is presented.
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页数：7
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