Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation

Chen Jiqiang; Long Qiwei; Zhou Jin; Wang Kelin

Chinese Physics C> 1989, Vol. 13> Issue(S4) : 347-356

Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation

Chen Jiqiang ^1,3 ,
Long Qiwei ^2,3,1 ,
Zhou Jin ¹ ,
Wang Kelin ¹

1. Centre for Fundamental Physics, University of Science and Technology of China, Hefei;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang;
3. International Centre for Material Physics, Chinese Academy of Sciences, Shenyang

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Abstract：
On the basis of a simple grain boundary model, the trapped states of positrons at grain boundaries in pure Aluminum are solved and the corresponding lifetime spectra of positron annihilation calculated. The correlations between the atomic density distributions of grain boundaries and the lifetime spectra are discussed, and the existent experimental results are explained theoretically.

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Chen Jiqiang, Long Qiwei, Zhou Jin and Wang Kelin. Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation[J]. Chinese Physics C, 1989, 13(S4): 347-356.

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Received: 1989-02-13

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