10:15 AM - 10:30 AM
[2B04] Hydrogen isotope retention enhancement for tungsten exposed to QUEST plasma
Keywords:Tungsten, Hydrogen isotope, QUEST
Elucidation of hydrogen isotope retention behavior is one of critical issues for fuel recycling. In this study, hydrogen isotope retention enhancement for W samples exposed to QUEST plasma during 2015 Fall-Winter campaign and 2016 spring-summer campaign was evaluated and compared. It was found that deposition was major interaction process for 2016 spring-summer campaign, although erosion was dominant for 2015 Fall-Winter campaign. Therefore the hydrogen isotope TDS spectra was quite different among these samples.