Conditions Extrêmes et Matériaux : Haute Température et Irradiation
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2014
OS
doi
CW He, K Dawi, C Platteau, MF Barthe, P Desgardin, S Akhmadaliev
,
'Vacancy type defect formation in irradiated α-iron investigated by positron beam Doppler broadening technique'
, IOP Conf. Ser.: Mater. Sci. Eng. 505 012018 (2014) doi:
10.1088/1742-6596/505/1/012018
Vacancy type defects formations have been investigated in virgin and irradiated α-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.