Surface modification at tungsten and tungsten coated graphite due to low energy and high fluence plasma and laser pulse irradiation

被引：40
作者：
Ohno, N.
Kajita, S.
Nishijima, Dai
Takamura, S.
机构：
[1] Nagoya Univ, EcoTopia Sci Inst, Chikusa Ku, Nagoya, Aichi 4648603, Japan
[2] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan
来源：
JOURNAL OF NUCLEAR MATERIALS | 2007年 / 363卷
关键词：
tungsten; blister; bubble; dust; NAGDIS-II;
D O I：
10.1016/j.jnucmat.2007.01.148
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated the influence of low energy helium and hydrogen/deuterium plasma irradiation to tungsten or tungsten coated graphite samples. The experimental conditions of helium hole/bubble formation and hydrogen blister formation were summarized. The tungsten coated graphite exposed to a helium plasma shows different surface modification from those of bulk tungsten. We also demonstrated a transient heat load onto a damaged tungsten surface due to a helium plasma exposure by a laser-beam irradiation. Simultaneous helium plasma and laser pulse irradiations lead to a further roughing of the tungsten surface. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1153 / 1159
页数：7
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