A positron annihilation study on large angle grain boundaries

Xianyi Zhou; Huilin Jiang; Shuying Wang; Jian Jiang; Qiwei Long

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A positron annihilation study on large angle grain boundaries

更新时间：2022-08-16

- A positron annihilation study on large angle grain boundaries
- Nuclear Techniques Vol. 12, Issue 11, (1989)
- 作者机构：
  
  1.中国科学技术大学
  2.中国科学院高能物理研究所
  3.中国科学院金属研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 December 1987，
  
  Published：1989-11
- 稿件说明：
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Xianyi Zhou, Huilin Jiang, Shuying Wang, et al. A positron annihilation study on large angle grain boundaries[J]. Nuclear techniques, 1989, 12(11): 638-642.
DOI：

Xianyi Zhou, Huilin Jiang, Shuying Wang, et al. A positron annihilation study on large angle grain boundaries[J]. Nuclear techniques, 1989, 12(11): 638-642. DOI：

摘要

从两态捕获模型出发，导出了正电子平均寿命与晶粒大小之间的关系，并且预言了晶界正电子饱和捕获效应的存在。在实验上，通过对Zn-22wt%Al合金大角度晶界正电子捕获效应的观察，验证了上述关系，并对大角度晶界正电子捕获效应的一般情况予以讨论。

Abstract

The relationship between positron mean lifetime and grain size

based on two state trapping model

has been developed

and the saturation trapping at grain boundaries has been predicated. Experimetally

the relationship is tested and verified through the positron trapping at grain boundaries of Zn-22wt. % Al alloys. A general situation of positron trapping at large angle grain boundaries is discussed.

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Keywords

references

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B. T. A. McKee et al .，私人通信， M. J. Stott提供。

何元金等，正电子湮没谱学基础，清华大学材料研究所、固体物理教研室， 1983 年。

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B. Bergersen , et al ., Solid State Communi. , 15 （ 1974 ）, 1377 .

王淑英，高能物理与核物理， 7 （ 1983 ）, 408 。

龙期威，理论金属物理导论（2），中国科技大学及中国科学院金属研究所讲义， 1983 年。

B. Bergersen et al . Appl. phys. , 4 （ 1974 ）, 25 .

冯　端等，金属物理，科学出版社， 1964 年。

P. Jena et al ., phys. Rev. , B24 （ 1981 ）, 2884 .

K. Iyakutti et al ., J. phys. F: Met. Phys. , 13 （ 1983 ）, 1 .

C. Hidalgo et al ., Appl. phys. , A27 （ 1982 ）, 150 .

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3 CAO Mingzhou 3 LONG Qiwei 2

2 ZHONG Xiaping 1 HUANG Yuyang 1 XIONG Liangyue 2

Related Institution

Hubei Nuclear Solid Physics Key Laboratory, School of Physics and Technology, Wuhan University

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中国科学院国际材料物理中心

中国科学院金属研究所

中国科学院国际材料物理中心南宁530004中国科学院国际材料物理中心沈阳

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