Vacancy type defect formation in irradiated α-iron investigated by positron beam Doppler broadening technique

Vacancy type defects formations have been investigated in virgin and irradiated a-iron samples using slow positron beam Doppler broadening technique. Mono-vacancies and vacancy clusters are observed in 1.5 MeV 4He ions irradiated Fe samples at varying fluences from 1×1013 to 1×1017 cm−2. In the 1.2...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-04, Vol.505 (1), p.12018-7
Main Authors: He, C W, Dawi, K, Platteau, C, Barthe, M F, Desgardin, P, Akhmadaliev, S
Format: Article
Language:English
Subjects:
Alpha iron
Chemical Sciences
Clusters
Defects
Doppler
Doppler effect
Fluence
Formations
Ion implantation
Irradiation
Material chemistry
Physics
Positron beams
Reinforced reaction injection molding
Vacancies
Yttrium
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Summary:Vacancy type defects formations have been investigated in virgin and irradiated a-iron samples using slow positron beam Doppler broadening technique. Mono-vacancies and vacancy clusters are observed in 1.5 MeV 4He ions irradiated Fe samples at varying fluences from 1×1013 to 1×1017 cm−2. In the 1.2 MeV Yttrium ions implantation at low fluence 1×1014 cm−2 vacancy clusters with higher concentration and larger size are formed. In this sample, vacancy defects are detected deeper than predicted by SRIM calculation due to channelling.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/505/1/012018