用光谱法测量HL-2A中性束注入器离子束成分  

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

作　　者：杨立梅[1] 于利明 余德良[1] 韩晓玉[1] 雷光玖[1] 段旭如[1] 

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2009年第4期361-364,共4页Nuclear Fusion and Plasma Physics

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:JH2: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%,而则从17%降到7%。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%.

关 键 词：离子束成分 多普勒频移 多峰拟合 

分 类 号：TL271.4[核科学技术—核燃料循环与材料] O536[理学—等离子体物理]