Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals

doi:10.1088/1674-1056/19/7/077806

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 77806-077806.doi: 10.1088/1674-1056/19/7/077806

Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals

张杰, 陈祥磊, 叶邦角

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10675114 and 10835006) and the Important Direction Project of the Chinese Academy of Sciences.

Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals

Zhang Jie(张杰)^†, Chen Xiang-Lei(陈祥磊), and Ye Bang-Jiao(叶邦角)

Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Online:2010-07-15 Published:2010-07-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10675114 and 10835006) and the Important Direction Project of the Chinese Academy of Sciences.

摘要/Abstract

摘要： The positron lifetimes of some compounds with NaCl-type crystal structure are calculated with the method of atomic superposition approximation (ATSUP) based on the theories of local-density-approximation (LDA) and general-gradient-approximation (GGA). The systematical results are fitted to a curve as a function of lattice constants. The positron bulk lifetimes of some other compounds with NaCl-type crystal structure, which are deduced from the systematical results, are in agreement with the experimental results given in other literature.

Abstract: The positron lifetimes of some compounds with NaCl-type crystal structure are calculated with the method of atomic superposition approximation (ATSUP) based on the theories of local-density-approximation (LDA) and general-gradient-approximation (GGA). The systematical results are fitted to a curve as a function of lattice constants. The positron bulk lifetimes of some other compounds with NaCl-type crystal structure, which are deduced from the systematical results, are in agreement with the experimental results given in other literature.

Key words: positron bulk lifetime, NaCl-type crystal structure

中图分类号: (Inorganic compounds)

61.66.Fn

78.70.Bj (Positron annihilation)

张杰, 陈祥磊, 叶邦角. Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals[J]. 中国物理B, 2010, 19(7): 77806-077806.

Zhang Jie(张杰), Chen Xiang-Lei(陈祥磊), and Ye Bang-Jiao(叶邦角). Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals[J]. Chin. Phys. B, 2010, 19(7): 77806-077806.

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Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals

Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals

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