Production of high-flux mixed ion beam for study of plasma material interaction
Production of high-flux mixed ion beam for study of plasma material interaction
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产生用于研究等离子体材料相互作用的高通量混合离子束
DOI：
10.1016/s0920-3796(02)00169-2
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发表时间：
2002
影响因子：
1.7
通讯作者：
M. Nishikawa
中科院分区：
文献类型：
--
作者：
Y. Ueda;H. Kikuchi;T. Shimada;A. Sagara;B. Kyoh;M. Nishikawa
研制了一种高通量稳态ECR离子束辐照试验装置。加速电压Vac为3 kV时，氢辐射通量为3.6× 1021 Hm −2s− 1，加速电压Vac为0.15 - 0.5 kV时，氢辐射通量约为4× 1020 Hm −2s− 1（主要离子种类为H3+）。获得了碳浓度为0.1%~ 10%的氢碳混合离子束。通过在离子源室中充入甲烷气体或放置石墨板来控制碳杂质浓度。利用测量的分子离子在束流输运室中的有效截面（包括离解和中和）计算了碳杂质浓度。观察了氢碳混合离子束轰击钨时新混合材料对钨鼓泡形成的影响。结果表明，氢束中小于1%的碳杂质对气泡的形成有显著影响。
A steady-state and high-flux ion beam irradiation test device (HiFIT) equipped with an ECR ion source and spherical electrodes was developed. Hydrogen irradiation fluxes were 3.6×1021Hm−2s−1for an acceleration voltage Vaccof 3 kV and about 4×1020Hm−2s−1for Vaccfrom 0.15 to 0.5 kV (dominant ion species is H3+). Mixed ion beams with hydrogen and carbon with the carbon concentration from 0.1% to ∼10% were obtained. Carbon impurity concentration was controlled by puffing methane gas or putting graphite plates in the ion source chamber. Carbon impurity concentration was calculated by using measured effective cross-sections (including dissociation and neutralization) of molecular ions in a beam transport chamber. New mixed material effect on blister formation of tungsten bombarded with hydrogen and carbon mixed ion beam was observed. It was found that carbon impurity of less than 1% in hydrogen beams significantly affected blister formation.