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Point Defects Observed in D-T neutron irradiated Copper, Silver and Gold at 288 K with a Rotating Target in FNS_JAERI

Published online by Cambridge University Press:  21 March 2011

Y. Shimomura ,
K. Sugio ,
H. Ohkubo ,
I. Mukouda ,
C. Kutsukake  and
H. Takeuchi
Y. Shimomura
Affiliation:
Applied Physics and Chemistry, Faculty of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
K. Sugio
Affiliation:
Applied Physics and Chemistry, Faculty of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
H. Ohkubo
Affiliation:
Venture Business Laboratory, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
I. Mukouda
Affiliation:
Venture Business Laboratory, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
C. Kutsukake
Affiliation:
Department of Fusion Engineering Research, Naka Branch JAERI Tokai-mura, Ibaraki-ken 319-1195, Japan
H. Takeuchi
Affiliation:
Department of Fusion Engineering Research, Naka Branch JAERI Tokai-mura, Ibaraki-ken 319-1195, Japan
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Abstract

A 14 MeV D-T(fusion) neutron irradiation was carried out at fusion neutron source facility (FNS) in Japan Atomic Energy Research Institute (JAERI). Specimen temperature was controlled to 288 K. Fluence was 6.1 × 1017to 1.1 × 1021 n/m2. Both TEM thin foil and bulk specimens were irradiated at the same position. At 1018 n/m2, defects observed were single isolated dot defects. With increasing fluence, dot defects changed to complicate structure and made groupings. In a dot group, interstitial clusters and vacancy clusters were observed together. The present result was explained by the modeling that point defects in a nascent damage cascade move in crystal at 288 K and form their defect groupings.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 650: Symposium R – Microstructural Processes in Irradiated Materials-2000 , 2000 , R3.8
Copyright
Copyright © Materials Research Society 2001

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References

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