Systematic Calculations of α-Decay Half-Lives Using Microscopic Deformed Potentials  

作　　者：倪冬冬 任中洲 

机构地区：[1]Department of Physics,Nanjing University [2]Kavli Institute for Theoretical Physics China [3]Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator

出　　处：《Plasma Science and Technology》2012年第7期588-594,共7页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.10535010,10675090,10775068,10735010,10975072,11035001);973 National Major State Basic Research and Development of China(Nos.2007CB815004,2010CB327803);CAS Knowledge Innovation Project(No.KJCX2-SW-N02);Research Fund of Doctoral Point(RFDP) of China(Nos.20070284016,20100091110028)

摘　　要：A new version of the generalized density-dependent cluster model （GDDCM） is developed to describe an α particle tunneling through a deformed potential barrier. The microscopic deformed potential is numerically constructed in the double-folding model using the multipole ex- pansion method. The decay width of an α-cluster state is evaluated using the integral of the quasi-bound state wave function, the scattering state wave function, and the difference of poten- tials. We perform a systematic calculation of α-decay half-lives for favored transitions in even-even nuclei ranging from Z=52 to Z=104. The calculated half-lives are in good agreement with the experimental values. The relation between nuclear deformations and α-decay half-lives is also discussed in details.A new version of the generalized density-dependent cluster model （GDDCM） is developed to describe an α particle tunneling through a deformed potential barrier. The microscopic deformed potential is numerically constructed in the double-folding model using the multipole ex- pansion method. The decay width of an α-cluster state is evaluated using the integral of the quasi-bound state wave function, the scattering state wave function, and the difference of poten- tials. We perform a systematic calculation of α-decay half-lives for favored transitions in even-even nuclei ranging from Z=52 to Z=104. The calculated half-lives are in good agreement with the experimental values. The relation between nuclear deformations and α-decay half-lives is also discussed in details.

关 键 词：a-decay cluster model HALF-LIVES deformed potentials 

分 类 号：O571.3[理学—粒子物理与原子核物理]