Damage study of irradiated tungsten and copper using proton and argon ions of a plasma focus device.
Plasma facing material
Plasma focus
Radiation damage
Journal
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
ISSN: 1872-9800
Titre abrégé: Appl Radiat Isot
Pays: England
ID NLM: 9306253
Informations de publication
Date de publication:
Dec 2019
Dec 2019
Historique:
received:
03
05
2019
revised:
27
07
2019
accepted:
21
08
2019
pubmed:
31
8
2019
medline:
31
8
2019
entrez:
31
8
2019
Statut:
ppublish
Résumé
The destructive effects of proton and argon ions produced in a low energy plasma focus device on the surface of tungsten and copper were investigated. Optical microscopy, SEM, EDX, XRD and ERD analysis were performed for initial and irradiated samples. The results showed that total thermal impact under the irradiation by argon is much more significant than that by hydrogen. Sub-micrometer blisters, clusters of joined bubbles and rupture patterns were observed on the surface of copper after irradiation by argon. Micro-cracks were observed on the tungsten samples irradiated by argon, which indicate fast annealing of the molten surface. Many dense blisters and evidence of ion sputtering were observed on the surfaces irradiated by protons. Results of ERD analysis showed that the highest concentration of hydrogen is 24% in the second layer and at a depth of 20-55 nm from the tungsten surface. In the copper sample, the highest density of hydrogen was found to be 23% in the second layer and at a depth of 28-68 nm. Also, the highest penetration depth of protons into the tungsten and copper samples was 118 nm and 160 nm, respectively.
Identifiants
pubmed: 31470188
pii: S0969-8043(19)30515-9
doi: 10.1016/j.apradiso.2019.108875
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
108875Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.