用光谱法测量HL-2A中性束注入器离子束成分

核聚变与等离子体物理 ›› 2009, Vol. 29 ›› Issue (4): 361-364.

用光谱法测量HL-2A中性束注入器离子束成分

杨立梅，于利明，余德良，韩晓玉，雷光玖，段旭如

(核工业西南物理研究院，成都 610041)

收稿日期:2009-01-06 修回日期:2009-05-25 出版日期:2009-12-15 发布日期:2010-05-24
作者简介:杨立梅(1984-)，女，河北省保定市人，毕业于河北科技大学，核工业西南物理研究院核能科学与工程专业在读硕士研究生，研究方向：等离子体可见光谱诊断。

Doppler shift spectroscopy for the measurement of ion species of HL-2A neutral beam injector

YANG Li-mei, YU Li-ming, YU De-liang, HAN Xiao-yu, LEI Guang-jiu, DUAN Xu-ru

(Southwestern Institute of Physics，Chengdu 610041)

Received:2009-01-06 Revised:2009-05-25 Online:2009-12-15 Published:2010-05-24

摘要/Abstract

摘要： 在HL-2A中性束试验平台上，利用多普勒频移光谱方法测量了离子源引出离子流的各组成成分及其随弧流的变化情况。在数据分析中提出了遗传算法(GA)和L-M优化算法相结合进行光谱拟合的方法。结果表明，当束能量为30keV、弧流为340A时，离子流中各组分之比 J_H⁺:J_H2⁺:J_H3⁺=0.57: 0.36: 0.07。当弧流从90A增加到350A时，H⁺百分比从45%增加到57%，而H₃⁺则从17%降到7%。

关键词: 离子束成分, 多普勒频移, 多峰拟合

Abstract: On the NBI test-bed, the ion species of the extracted ion current of ion source and their variance with the arc current have been obtained by taking advantage of optical diagnostic on the basis of Doppler shift. A method based on GA and L-M has been proposed to analyze the experimental spectrum. The results show that the ratio of H⁺, H₂⁺and H₃⁺is about 0.57:0.36:0.07 as the beam energy of 30keV and arc current of 340A. When the arc current varies from 90A to 350A, the percentage of H⁺ increases from 45% to 57%, whereas the H₃⁺decreases from 17% to 7%.

Key words: Fraction of ion species, Doppler shift, Multi-peak fitting

中图分类号:

杨立梅，于利明，余德良，韩晓玉，雷光玖，段旭如. 用光谱法测量HL-2A中性束注入器离子束成分[J]. 核聚变与等离子体物理, 2009, 29(4): 361-364.

YANG Li-mei, YU Li-ming, YU De-liang, HAN Xiao-yu, LEI Guang-jiu, DUAN Xu-ru. Doppler shift spectroscopy for the measurement of ion species of HL-2A neutral beam injector[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2009, 29(4): 361-364.

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