Effect of Oxygen Impurities on Positronium Formation in Voids of Vanadium
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概要
- 論文の詳細を見る
To clarify the effect of oxygen impurities on positronium (Ps) formed in irradiation-induced voids, measurements of the angular correlation of two photon annihilation radiation (ACAR) have been done on vanadium samples doped with oxygen impurities and subsequently irradiated with fast neutrons of doses up to 5.5x10^<20>cm^<-2> at about 400℃ in the Japan Materials Testing Reactor (JMTR). It has been shown that slight contamination of voids with oxygen impurity atoms, presumably submonolayer adsorption on the void surface, causes Ps formation. On the other hand, the considerable contamination leads suppression of Ps formation. Energy loss process of Ps in voids is found to be also influenced by the surface contamination.
- 東北大学の論文
- 1991-03-05
著者
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Matsui Hideki
Institute For Materials Research Tohoku University
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YAMAGUCHI Sadae
Institute for Materials Research, Tohoku University
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Ohnuki Somei
Metals Research Institute Faculty Of Engineering Hokkaido University
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HASEGAWA Masayuki
Institute for Materials Research, Tohoku University
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YOSHINARI Osamu
Department of Materials Science and Engineering, Nagoya Institute of Technology
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Yoshinari Osamu
Department Of Materials Science And Engineering Nagoya Institute Of Technology
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Saitoh Yoshiaki
Institute for Materials Research, Tohoku University
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Takahashi Heishichiro
Metals Research Institute, Faculty of Engineering, Hokkaido University
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Yamaguchi Sadae
Institute For Materials Research Tohoku University
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Saitoh Yoshiaki
Institute For Materials Research Tohoku University
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Matsui Hideki
Institute For Material Research Tohoku University
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Takahashi Heishichiro
Metals Research Institute Faculty Of Engineering Hokkaido University
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Hasegawa Masayuki
Institute For Materials Research Tohoku University
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