arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.05889nucl-th
收藏

双β衰变伴体~(116)Cd(Sn)和~(150)Nd(Sm)的Gamow-Teller性质

Gamow-Teller properties of the double beta-decay partners 116Cd(Sn) and 150Nd(Sm)

D. Navas-Nicolas, P. Sarriguren

摘要:

基于形变质子-中子准粒子无规相近似,在Skyrme自洽平均场下,结合对关联和自旋-同位旋余力,研究了连接双β衰变伙伴(116 Cd,116 Sn)和(150 Nd,150 Sm)与中间核(116 In,150 Pm)的两个Gamow-Teller(GT)分支.结果进行了比较与实验GT强度分布提取的电荷交换反应。结合这两个分支,两个中微子双β衰变的核矩阵元素进行评估,并与来自测量的半衰期的实验值进行比较。

英文摘要:

The two Gamow-Teller (GT) branches connecting the double-beta decay partners (116Cd, 116Sn) and (150Nd, 150Sm) with the intermediate nuclei 116In and 150Pm are studied within a microscopic approach based on a deformed proton-neutron quasiparticle random-phase approximation built on a Skyrme selfconsistent mean field with pairing correlations and spin-isospin residual forces. The results are compared with the experimental GT strength distributions extracted from charge-exchange reactions. Combining the two branches, the nuclear matrix elements for the two-neutrino double-beta decay are evaluated and compared to experimental values derived from the measured half-lives.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑