Model-independent trend of α-preformation probability  

作　　者：QIAN YiBin REN ZhongZhou 

机构地区：[1]Department of Physics,Nanjing University [2]Joint Center of Nuclear Science and Technology,Nanjing University [3]Kavli Institute for Theoretical Physics China [4]Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator

出　　处：《Science China(Physics,Mechanics & Astronomy)》2013年第8期1520-1524,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos. 11035001, 10975072, 10735010 and 11120101005);the National Major State Basic Research and Development of China (Grant Nos. 2010CB327803 and 2013CB834400);the Knowledge Innovative Program of the Chinese Academy of Sciences (Grant No. KJCX2-SW-N02);the Research Fund of Doctoral Point (RFDP) (Grant No. 20100091110028);the Project Funded by the Priority Academic Programme Development of Jiangsu Higher Education Institutions (PAPD);the Research and Innovation for College Postgraduate of JiangSu Province (Grant No. CXZZ12 0031);the Science and Technology Development Fund of Macao (Grant No.068/2011/A)

摘　　要：The α-preformation probability is directly deduced from experimental α decay energies and half-lives in an analytical way without any modified parameters. Several other model-deduced results, are used to compare with that of the present study. The key role played by the shell effects in the v-preformation process is indicated in all these cases. In detail, the α-preformation factors of different theoretical extractions are found to have similar behavior for one given isotopic chain, implying the model-independent varying trend of the preformation probability of α particle. In addition, the formation probability of heavier particle in cluster radioactivity is also obtained, and this confirms the relationship between the cluster preformation factor and the product of the cluster and daughter proton numbers.The α-preformation probability is directly deduced from experimental α decay energies and half-lives in an analytical way without any modified parameters. Several other model-deduced results, are used to compare with that of the present study. The key role played by the shell effects in the α-preformation process is indicated in all these cases. In detail, the α-preformation factors of different theoretical extractions are found to have similar behavior for one given isotopic chain, implying the model-independent varying trend of the preformation probability of α particle. In addition, the formation probability of heavier particle in cluster radioactivity is also obtained, and this confirms the relationship between the cluster preformation factor and the product of the cluster and daughter proton numbers.

关 键 词：α decay preformation factor cluster model 

分 类 号：O571.32[理学—粒子物理与原子核物理]