Positron Annihilation in Nearly Perfect Crystals of Aluminum during Slow Cooling
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概要
- 論文の詳細を見る
Doppler-broadening lineshapes of positron annihilation in nearly perfect crystalsof aluminum were measured as a function of temperature durinag cooling down from650 K to room temperature with various cooling rates, 1.9-27.4 K/h. The lineshapeparamctcr S reflected the existence of excess vacancies depending on the cooling rate,and exhibited a linear ternperature dependence below about 500 K. Its associatedtemperature coefficient was larger than the corresponding quantity for theequilibrium measurements of S in the prevacancy region, and increased with theexcess vacancy concentration. The results, in conjunction wzith the data for thequenched-state below 200 K, suggested that the temperature dependence of S for thevacancy-trapped state of the positron is approximately linear, over the range 100-500K, with a temperature coefficient about twice that found for the free state.
- 社団法人日本物理学会の論文
- 1986-02-15
著者
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紀 隆雄
広島国際学院大学工学部
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Fujiwara Atsushi
Wireless Laboratories, NTT DoCoMo, Inc.
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MIZUNO Kiyoshi
Department of physics,Tokyo Metropolitan University
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KINO Takao
Laboratory of Crystal Physics, Faculty of Science, Hiroshima Univ.
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Mizuno K
Defence Evaluation And Res. Agency Malvern Worcestershire Gbr
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Shiraishi Takeshi
Laboratory Of Crystal Physics Faculty Of Science Hiroshima University
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Mizuno K
Department Of Material Science Faculty Of Science And Engineering Shimane University
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Mizuno Kaoru
Laboratory Of Crystal Physics Faculty Of Science Hiroshima University
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Shiraishi T
Laboratory Of Crystal Physics Faculty Of Science Hiroshima University
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Shiraishi T
Department Of Electrical & Electronic Engineering Ritsumeikan University
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Hashimoto Eiji
Laboratory Of Crystal Physics Faculty Of Science Hiroshima University
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Mizuno Kiyoshi
Faculty Of Integrated Arts And Science Tokushima University
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FUJIWARA Atsushi
Laboratory of Crystal Physics,Faculty of Science,Hiroshima University
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Kino Takao
Laboratory Of Crystal Physics Faculty Of Science Hiroshima Univ.
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Fujiwara A
Ntt Docomo Inc. Yokosuka‐shi Jpn
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