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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Professor Dr. Hongbin Ding
其他任职：物理学院学术委员会主任，等离子体联合研究中心主任,中国光学工程学会LIBS专委会副主任, 中国核学会核聚变等离子体分会常务理事，辽宁省物理学会副理事长，国际ITER-ITPA 委员
性别：男
毕业院校：巴塞尔大学
学位：博士
所在单位：物理学院
学科：等离子体物理. 光学工程
联系方式：hding@dlut.edu.cn
电子邮箱：hding@dlut.edu.cn
Laser-induced breakdown spectroscopy for Wendelstein 7-X stellarator limiter tile analysis
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论文类型：期刊论文
发表时间：2017-12-01
发表刊物：16th International Conference on Plasma-Facing Materials and Components for Fusion Applications
收录刊物：Scopus、SCIE、EI、CPCI-S
卷号：T170
期号：T170
ISSN号：0031-8949
关键字：laser-induced breakdown spectroscopy; plasma wall interaction; fuel retention; deposition; erosion
摘要：Laser-induced breakdown spectroscopy (LIBS) is a well-established elemental composition analysis method as well as one of the most promising candidates for in situ first wall diagnosis of fusion devices. In this work, limiter graphite tiles, which were exposed in the initial operational phase (OP1.1) of the Wendelstein 7-X stellarator to He and H plasma, are analyzed ex situ by LIBS employing a picosecond pulsed laser for the first time and compared with post mortem analysis techniques. Depth profiles of each element and 2D profile of the ratio of H and C atoms on the surface are investigated. Both H content and retention depth on the deposition dominated zone are higher than on the erosion dominated zone due to the formation of C-H co-deposition layer. The results from LIBS are in agreement with those from the cross-sectional scanning electron microscopic image and electron dispersive x-ray spectroscopy.