| 基于离线激光诱导击穿光谱方法的HL-2A石墨瓦沉积层初步分析 |
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| 引用本文： | 王振忠,才来中,刘平,刘佳敏,Imran Muhammad,丁洪斌.基于离线激光诱导击穿光谱方法的HL-2A石墨瓦沉积层初步分析[J].核聚变与等离子体物理,2018,2(2):170-176. |
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| 作者姓名： | 王振忠 才来中 刘平 刘佳敏 Imran Muhammad 丁洪斌 |
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| 作者单位： | (1. 核工业西南物理研究院，成都 610041；2. 大连理工大学物理与光电工程学院，三束材料改性教育部重点实验室，大连 116024) |
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| 基金项目： | 国家磁约束核聚变能发展研究专项(2015GB106001)；四川省科技厅国际合作重点项目(2016HH0006) |
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| 摘 要： | 对HL-2A 偏滤器靶板和固定孔栏位置的石墨瓦进行了离线激光诱导击穿光谱(LIBS)测量，比较分析了沉积行为，初步得到了不同位置沉积层粒子种类(Fe、Si、H、D 等元素)及其深度的变化。与飞行时间二次离子质谱仪(TOF-SIMS)所得结果进行了对比，发现离子深度变化形貌趋同。根据沉积层有效信号激光数，得到激光烧蚀速率约为270nm/脉冲。
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| 关 键 词： | 激光诱导击穿光谱 石墨 HL-2A 偏滤器 等离子体与材料相互作用 |
Analyzing the deposition layer on the carbon tiles of HL-2A with laser-induced breakdown spectroscopy |
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| WANG Zhen-zhong,CAI Lai-zhong,LIU Ping,LIU Min-Jia,Imran Muhammad,DING Hong-bin.Analyzing the deposition layer on the carbon tiles of HL-2A with laser-induced breakdown spectroscopy[J].Nuclear Fusion and Plasma Physics,2018,2(2):170-176. |
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| Authors: | WANG Zhen-zhong CAI Lai-zhong LIU Ping LIU Min-Jia Imran Muhammad DING Hong-bin |
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| Institution: | (1. Southwestern Institute of Physics, Chengdu 610041;2. Dalian University of Technology, Dalian 116024) |
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| Abstract: | The graphite tiles, located at the lower divertor and the fixed limiter of HL-2A tokamak, were measured with ex-situ laser-induced breakdown spectroscopy (LIBS). The deposition behavior on HL-2A was presented by analyzing different elements including C, Fe, Si, H and D within the tiles and their distributions on depth in different tiles. Comparing with the results obtained with time of flight secondary ion mass spectrometry (TOF-SIMS), the depth profiles show well consistency. According to the effective number of deposition layer erased by the laser, the average laser ablation rate is estimated to be 270nm/pulse. |
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| Keywords: | Laser-induced breakdown spectroscopy Graphite tile HL-2A divertor Plasma-material interaction |
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