Recoil energy spectrum analysis and impact effect of cascade and subcascade in 14 mev d-t fusion neutron irradiated FCC metals

M. Kiritani, T. Yoshiie, S. Kojima, Y. Satoh

研究成果: Article査読

73 被引用数 (Scopus)

抄録

Presented at the Workshop on Effects of Recoil Energy Spectrum and Nuclear Transmutations on the Evolution of Microstructure. March 24–29, 1988 at Lugano, Switzerland An analysis of cascade and subcascade formation in fcc metals by D-T fusion neutron irradiation is made by fitting the experimentally observed distribution of cascade zone size and number of subcascades to the calculated primary recoil energy spectrum. The analysis is made by categorizing subcascades into closely space (Ag, Au) and widely separated (Cu, Ni). The energy subdivided in subcascades is estimated. The estimated energy density in a subcascade is as high as several tens of eV/atom, which is high enough to raise the local temperature far beyond the melting temperature. A discussion is made on the reactions during cascade cooling, suggesting the inadequacy of the conventional radiation damage parameter of DPA. The existence of impact effects from other cascades to reveal the cascade collision induced invisible vacancies as visible vacancy clusters is concluded. A kinetics type of analysis is made on the microstructure evolution by the impact effect, and the sphere of influence of the impact is estimated for each material.

本文言語English
ページ(範囲)75-96
ページ数22
ジャーナルRadiation Effects and Defects in Solids
113
1-3
DOI
出版ステータスPublished - 1990 3月 1
外部発表はい

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 凝縮系物理学

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