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Systematic law for half-lives of double-beta decay with two neutrinos

文献类型：期刊论文

作者Ren, Yuejiao1; Ren, Zhongzhou1,2
刊名PHYSICAL REVIEW C
出版日期2014-06-06
卷号89
ISSN号0556-2813
DOI10.1103/PhysRevC.89.064603
文献子类Article
英文摘要Nuclear double-beta decay with two neutrinos is a rare and important process for natural radioactivity of unstable nuclei. The experimental data of nuclear double-beta(-) decay with two neutrinos are analyzed and a systematic law to calculate the half-lives of this rare process is proposed. It is the first analytical and simple formula for double-beta-decay half-lives where the leading effects from both the Coulomb potential and the nuclear structure are included. The systematic law shows that the logarithms of the half-lives are inversely proportional to the decay energies for the ground-state transitions between parent nuclei and daughter nuclei. The calculated half-lives are in agreement with the experimental data of ground-state transitions of all known 11 nuclei with an average factor of 3.06. The half-lives of other possible double-beta-decay candidates with two neutrinos are predicted and these can be useful for future experiments. The law, without introducing any extra adjustment, is also generalized to the calculations of double-beta-decay half-lives from the ground states of parent nuclei to the first 0(+) excited states of daughter nuclei, and the calculated half-lives agree very well with the available data. The calculated half-lives from the ground states of parent nuclei Ca-48 and Nd-150 to the first 0(+) excited states of daughter nuclei are the first theoretical results as far as we know. The similarity and difference between the law of a decay and that of double-beta-decay are also analyzed and discussed.
WOS关键词EXCITED FINAL-STATES ; PARITY CONSERVATION ; FERMI INTERACTION ; MASS
资助项目Research Fund of Doctoral Point (RFDP)[20070284016]
WOS研究方向Physics
语种英语
WOS记录号WOS:000342438600002
出版者AMER PHYSICAL SOC
源URL[http://119.78.100.186/handle/113462/49457]  
专题中国科学院近代物理研究所
通讯作者Ren, Zhongzhou
作者单位1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Yuejiao,Ren, Zhongzhou. Systematic law for half-lives of double-beta decay with two neutrinos[J]. PHYSICAL REVIEW C,2014,89.
APA Ren, Yuejiao,&Ren, Zhongzhou.(2014).Systematic law for half-lives of double-beta decay with two neutrinos.PHYSICAL REVIEW C,89.
MLA Ren, Yuejiao,et al."Systematic law for half-lives of double-beta decay with two neutrinos".PHYSICAL REVIEW C 89(2014).

入库方式： OAI收割

来源：近代物理研究所

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