论文类型：
期刊论文
第一作者：
Liu, P.
通讯作者：
Ding, H (reprint author), Dalian Univ Technol, Chinese Minist Educ, Sch Phys & Opt Elect Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China.
合写作者：
Hu, J.S.,Chen, J.L.,Luo, G.N.,Wu, D.,Sun, L.Y.,Zhao, D.Y.,Hai, R.,Li, C.,Ding, H.,Hu, Z.H.,Wang, L.
发表时间：
2017-05-01
发表刊物：
FUSION ENGINEERING AND DESIGN
收录刊物：
SCIE、EI
文献类型：
J
卷号：
118
页面范围：
98-103
ISSN号：
0920-3796
关键字：
Ambient gas; Magnetic field; LIBS; EAST; ICRF wall cleaning
摘要：
In this paper, laser-induced breakdown spectroscopy (LIBS) under magnetic field condition has been studied in laboratory and EAST tokamak. The experimental results reveal that in helium ambient gas, the magnetic field significantly enhances the LIBS signal intensity (similar to 3 times). The effect of time delay and laser fluence on the intensity of LIBS has been investigated for optimizing the signal to background ratio (S/B). The developed LIBS approach has been applied to monitor the cleaning performance of the first wall in the fusion device of EAST using the ion cyclotron range of frequency (ICRF). The experimental results demonstrate that the cleaning performance for Li/D co-deposition layer is effective under helium ambient gas. The removing rate of Li on the surface of W tile is faster than that on Mo tile in He-ICRF cleaning and the D/(D + H) ratio on Mo tile is higher by similar to 1.2 times than that on W tile. This work would indicate the feasibility of using LIBS to monitor the wall cleaning processes in EAST tokamak. (C) 2017 Elsevier B.V. All rights reserved.
是否译文：
否
