| Relationship between positron bulk lifetime and lattice constants-research on NaCl-type crystals |
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| 作者姓名： | 张杰 陈祥磊 叶邦角 |
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| 作者单位： | Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China |
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| 基金项目： | 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. |
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| 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 generalgradient-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.
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| 关 键 词： | positron bulk lifetime NaCl-type crystal structure |
Relationship between positron bulk lifetime and lattice constants—research on NaCl-type crystals |
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| Zhang Jie,Chen Xiang-Lei and Ye Bang-Jiao.Relationship between positron bulk lifetime and lattice constants-research on NaCl-type crystals[J].Chinese Physics B,2010,19(7):77806-077806. |
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| Authors: | Zhang Jie Chen Xiang-Lei and Ye Bang-Jiao |
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| Institution: | Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China |
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| 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. |
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| Keywords: | positron bulk lifetime NaCl-type crystal structure |
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