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Numerical analysis of TDS spectra under high and low flux plasma exposure conditions

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Abstract

A recently developed numerical model, based on the dislocation-driven nucleation of gas bubbles, is used to analyse experimental results on deuterium retention in tungsten under ITER relevant plasma exposure conditions. Focus is placed on understanding the relation between exposure temperature and flux on primary features of thermal desorption spectra: peak positions and intensities of the desorption flux. The model allows one to relate the peak positions with the size of plasma induced deuterium bubbles and envisage exposure conditions (temperature and flux) for their formation. Based on the performed analysis, dedicated experimental conditions to validate the model are proposed.

Year of Publication
2016
Journal
Physica Scripta
Volume
2016
Issue
T167
Number of Pages
014039
DOI
PId
3b2b266c70913eb5bc397ac8e9e5e81d
Alternate Journal
Phys. Scr.
Journal Article
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