Short-term retention in metallic PFCs: modelling in view of mass spectrometry and LIBS

Abstract Based on the conventional model of hydrogen retention in plasma-facing components, the question of hydrogen outgassing during and after plasma exposure is addressed in relation to mass spectrometry and laser-induced breakdown sprectroscopy (LIBS) measurements. Fundamental differences in ret...

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Bibliographic Details
Published in:Physica scripta 2021-12, Vol.96 (12), p.124079
Main Authors: Matveev, Dmitry, Jiang, Xi, Sergienko, Gennady, Kreter, Arkadi, Brezinsek, Sebastijan, Linsmeier, Christian
Format: Article
Language:English
Subjects:
dynamic outgassing
hydrogen retention
LIBS
reaction-diffusion
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Summary:Abstract Based on the conventional model of hydrogen retention in plasma-facing components, the question of hydrogen outgassing during and after plasma exposure is addressed in relation to mass spectrometry and laser-induced breakdown sprectroscopy (LIBS) measurements. Fundamental differences in retention and release data acquired by LIBS and by mass spectrometry are described analytically and by modelling. Reaction-diffusion simulations are presented that demonstrate possible thermal outgassing effects caused by LIBS. Advantages and limitations of LIBS as a tool for analysis of short term retention are discussed.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ac43d6