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Stability of Cascades Under ion and Electron Irradiation in Germanium

Published online by Cambridge University Press:  16 February 2011

Hiroaki Abe ,
Chiken Kinoshita  and
Yasutaka Denda
Hiroaki Abe
Affiliation:
Department of Materials Development, Japan Atomic Energy Research Institute -Takasaki, Watanuki 1233, Takasaki
Chiken Kinoshita
Affiliation:
Department of Nuclear Engineering, Kyushu University 36, Fukuoka 812, Japan
Yasutaka Denda
Affiliation:
Department of Nuclear Engineering, Kyushu University 36, Fukuoka 812, Japan
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Abstract

Concurrent irradiation with ions and electrons has been done in a high voltage electron microscope interfaced with an ion accelerator. The objective is to clarify the stability of cascades in Ge in terms of the elementary processes associated with the concurrent irradiation. Amorphous-like cascade contrast is observed under ion irradiation and increases in number eventually leading to saturation. The cascade contrast is produced within cascade regions through sequential overlaps of cascades and heavier ions form more stable cascade regions. The concurrent or subsequent electron irradiation recrystallizes cascade regions through shrinkage of the cascade contrast. Point defects and their diffusion induced by electrons contribute to the recrystallization of cascade regions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 373: Symposium Y – Microstructure of Irradiated Materials , 1994 , 487
Copyright
Copyright © Materials Research Society 1995

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References

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