In situ nuclear reaction analysis of D retention in undamaged and self-damaged tungsten under atomic D exposure

In situ deuterium depth profile measurements by nuclear reaction analysis (NRA) were performed on undamaged and neutron-like damaged W during D atom exposure at several sample temperatures. Damaged W was produced by high energy W-ion irradiation. In situ results of D retention after exposure termina...

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Bibliographic Details
Published in:Physica scripta 2014-04, Vol.T159 (1), p.14047
Main Authors: Markelj, S, Ogorodnikova, O V, Pelicon, P, Schwarz Selinger, T, Vavpeti, P, ade, I
Format: Article
Language:English
Subjects:
deuterium atoms
deuterium retention
ion-damaged
NRA
tungsten
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Summary:In situ deuterium depth profile measurements by nuclear reaction analysis (NRA) were performed on undamaged and neutron-like damaged W during D atom exposure at several sample temperatures. Damaged W was produced by high energy W-ion irradiation. In situ results of D retention after exposure termination are in good agreement with ex situ measurements for damaged W. In contrast, in situ NRA during D exposure on undamaged W showed significantly higher D retention than ex situ NRA measurement. It is also shown that this increased retention is lower at the location non-irradiated by the probing 3He beam. These observations indicate that the D retention is influenced by secondary damage produced by the probing 3He beam, however the dynamic retention could also partially contribute to the observed retention increase.
ISSN:0031-8949
1402-4896
DOI:10.1088/0031-8949/2014/T159/014047