Self-consistent field method and non-self-consistent field method for calculating the positron lifetime

doi:10.1088/1674-1056/19/11/117802

Abstract Many methods are used to calculate the positron lifetime, these methods could be divided into two main types. The first method is atomic superposition approximation method and the second one is the so called energy band calculation method. They are also known as the non-self-consistent field method and self-consistent field method respectively. In this paper, we first introduce the two basic methods and then, we take Si as an example and give our calculation results, these results coincide with our latest experimental results, finally, we discuss the advantages and disadvantages of the two methods.

Keywords: positron lifetime atomic superposition approzimetion method pseudopotential method

Received: 24 January 2010
Revised: 11 May 2010
Accepted manuscript online:

PACS:	71.15.Mb	(Density functional theory, local density approximation, gradient and other corrections)
	78.70.Bj	(Positron annihilation)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10675115) and the Important Direction Project of the Chinese Academy of Sciences.

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Zhang Jie(张杰), Liu Jian-Dang(刘建党),Chen Xiang-Lei(陈祥磊), and Ye Bang-Jiao(叶邦角) Self-consistent field method and non-self-consistent field method for calculating the positron lifetime 2010 Chin. Phys. B 19 117802

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Self-consistent field method and non-self-consistent field method for calculating the positron lifetime

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