物理学报2009，Vol.58Issue(11)：7627-7632,6.
元素周期表中元素单晶基于局域密度理论的正电子寿命计算
Calculation of positron lifetime of single crystals of elements of the periodic table with the theory of local density approximation
摘要
Abstract
On the basis of local density approximation, superposed-neutral-atom model and the finite-difference method (SNA-FD) are used to calculate the positron bulk lifetime and positron monovacancy lifetime in crystals of elements of the periodic table. The distribution of positron wavefunction and positron annihilation rate are analyzed. The calculated results of positron bulk lifetime in elementary substance agree well with the experiment results in literatures, which shows that the method of SNA-FD is an effective method in the study of positron annihilation in elementary substance.关键词
局域密度近似理论/正电子寿命Key words
local density approximation/positron lifetime分类
数理科学引用本文复制引用
陈祥磊,孔伟,杜淮江,叶邦角..元素周期表中元素单晶基于局域密度理论的正电子寿命计算[J].物理学报,2009,58(11):7627-7632,6.基金项目
国家自然科学基金(批准号:10675114,10835006)资助的课题.Project supported by the National Natural Science Foundation of China (Grant Nos. 10675114,10835006). （批准号:10675114,10835006）
