Positron annihilation lifetime spectrum for vacancy and void in metal

Yongming Lou; Binglin Gu; Naifei Gao; Jiajiong Xiong

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Positron annihilation lifetime spectrum for vacancy and void in metal

更新时间：2022-09-13

- Positron annihilation lifetime spectrum for vacancy and void in metal
- Nuclear Techniques Vol. 09, Issue 10, (1986)
- 作者机构：
  
  清华大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：05 July 1985，
  
  Published：1986-10
- 稿件说明：
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Yongming Lou, Binglin Gu, Naifei Gao, et al. Positron annihilation lifetime spectrum for vacancy and void in metal[J]. Nuclear techniques, 1986, 09(10): 16-20,6,61.
DOI：

Yongming Lou, Binglin Gu, Naifei Gao, et al. Positron annihilation lifetime spectrum for vacancy and void in metal[J]. Nuclear techniques, 1986, 09(10): 16-20,6,61. DOI：

摘要

本文从理论上讨论了金属中正电子湮没寿命和金属的空位、空位团的体积的关系，利用密度泛函和交换关联能的局域密度近似，系统地计算了一系列金属中不同空位团的正电子寿命值。可以看出，正电子湮没技术是研究金属微观缺陷结构的有力手段。

Abstract

The positron lifetimes for voids are related with the effective volume of the voids of some metals from the theoretical points of view. By means of the density functional formalism and local density approximation

the positron annihilation lifetime for voids of various sizes in the metal have been calculated systematically. It is shown that the positron annihilation technique is a powerful method for investigating the structure of the defects in metal.

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references

P. Jena et al . , Phys. Rev. , B20 , 3543 （ 1979 ）.

O. Gunnarsson et al . , Phys. Rev. , B10 , 1319 （ 1974 ）.

W. Brandt and J. Reinheimer , Phys. Lett. , 35A , 457 （ 1971 ）.

M. J. Puska and R. M. Nieminen , J. Phys. F: Met. Phys. , 13 , 333 （ 1983 ）.

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