Spatial Resolution Measurements of C, Si and Mo Using LIBS for Diagnostics of Plasma Facing Materials in a Fusion Device

LI Cong (李聪); ZHAO Dongye (赵栋烨); WU Xingwei (吴兴伟); DING Hongbin (丁洪斌)

doi:10.1088/1009-0630/17/8/05

Plasma Science and Technology > 2015 > 17(8): 638-643. > DOI: 10.1088/1009-0630/17/8/05

LI Cong (李聪), ZHAO Dongye (赵栋烨), WU Xingwei (吴兴伟), DING Hongbin (丁洪斌). Spatial Resolution Measurements of C, Si and Mo Using LIBS for Diagnostics of Plasma Facing Materials in a Fusion Device[J]. Plasma Science and Technology, 2015, 17(8): 638-643. DOI: 10.1088/1009-0630/17/8/05

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Spatial Resolution Measurements of C, Si and Mo Using LIBS for Diagnostics of Plasma Facing Materials in a Fusion Device

Key Laboratory of Materials Modi?cation by Laser, Ion and Electron Beams, Chinese Ministry of Education, School of Physics and Optical Electronic Technology, Dalian University of Technology, Dalian 116024, China

Funds: supported by the National Magnetic Confinement Fusion Science Program of China (No. 2013GB109005), National Natural Science Foundation of China (Nos. 11175035, 11475039), Chinesisch-Deutsches Forschungs Project (GZ768) and the Fundamental Research Funds for the Central Universities of China (Nos. DUT12ZD(G)01, DUT14ZD(G)04)

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Received Date: February 01, 2015

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Abstract

Abstract

Recently, a laser-induced breakdown spectroscopic (LIBS) system has been devel?oped for in situ measurements of the chemical compositions of plasma facing materials (PFMs) in the Experimental Advanced Superconducting Tokamak (EAST). In this study, a LIBS system, which was used in a similar optical configuration to the in situ LIBS system in EAST, has been developed to investigate the spatial distribution of PFM elements at 10?4 Pa. The aim of this study was to understand the nature of the spatial distribution of atoms or ions of different elements in the plasma plume and optimize the signal to background ratio for the in situ LIBS diagnosis in EAST. The spatial profiles of the LIBS signals of C, Si, Mo and the continuous background were measured. Moreover, the influence of laser spot size and laser energy density on the LIBS signals of C, Si, Mo and H was also investigated. The results show that the distribution of the C, Si and Mo peaks’intensities first increased and then decreased from the center to the edge of the plasma plume. There was a maximum value at R ≈ 1.5 mm from the center of the plasma plume. This work aims to improve the understanding of ablating plasma dynamics in very low pressure environments and give guidance to optimize the LIBS system in the EAST device.
- laser induced breakdown spectroscopy,
- plasma expansion} spatial distribution,
- EAST

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References (23)

References

1 Miziolek A W, Palleschi V, Schechter I, 2006, Laser Induced Breakdown Spectroscopy. Cambridge University Press, New York, USA

2 Wang Z, Yuan T B, Hou Z Y, et al. 2014, Frontiers of Physics, 9: 419

3 Almaviva S, Caneve L, Colao F, et al. 2012, Journal of Nuclear Materials, 421: 73

4 Paris P, Aints M, Hakola A, et al. 2011, Fusion Engineering and Design, 86: 1125

5 Gasior P, Bieda M, Kubkowska M, et al. 2011, Fusion Engineering and Design, 86: 1239

6 Mercadier L, Hermann J, Grisolia C, et al. 2011, Journal of Nuclear Materials, 415: S1187

7 Hai R, Li C, Wang H, et al. 2013, Journal of Nuclear Materials, 438: S1168

8 Xiao Q, Huber A, Philipps V, et al. 2014, Journal of Nuclear Materials, 455: 180

9 Li C, Wu X, Zhang C, et al. 2014, Fusion Engineering and Design, 89: 949

10 Li C, Zhao D, Hu Z, et al. 2015, Journal of Nuclear Materials, doi: http://dx.doi.org/10.1016/j.jnucmat.2014.12.064

11 De Giacomo A, Dell’Aglio M, Gaudiuso R, et al. 2008,Spectrochimica Acta Part B, 63: 980

12 Chen M, Liu X, Zhao M, et al. 2009, Physical Review E, 80: 016405

13 Mercadier L, Hermann J, Grisolia C, et al. 2013, Journal of Analytical Atomic Spectrometry, 28: 1446

14 Arag′ on C, Aguilera J A. 2014, Spectrochimica Acta Part B, 65: 395

15 Hai R, Farid N, Zhao D, et al. 2013, Spectrochimica Acta Part B, 87: 147

16 Zhao D, Farid N, Hai R, et al. 2014, Plasma Science and Technology, 16: 149

17 Feng J, Wang Z, Li Z, et al. 2010, Spectrochimica Acta Part B, 65: 549

18 Anisimov S I, B¨ auerle D, Luk’yanchuk B S. 1993,Physical Review B, 48: 12076

19 Noll R. 2006, Analytical and Bioanalytical Chemistry,385: 214

20 Farid N, Li C, Wang H, et al. 2013, Journal of NuclearMaterials, 433: 80

21 De Giacomo A, Dell Aglio M, Bruno D, et al. 2008,Spectrochimica Acta Part B, 63: 805

22 Harilal S S, O’shay B, Tillack M S, et al. 2005, Journal of Applied Physics, 98: 013306

23 Roth J, Tsitrone E, Loarte A, et al. 2009, Journal of Nuclear Materials, 390-391: 1

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