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arXiv 1503.01222nucl-th
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相对论点耦合模型中核$β$衰变半衰期

Nuclear $β$-decay half-lives in the relativistic point-coupling model

Z. Y. Wang, Z. M. Niu, Y. F. Niu, J. Y. Guo

摘要:

采用自洽质子-中子准粒子无规相近似方法,计算了丰中子偶偶核的$8\leqslant Z \leqslant 30$衰变半衰期。计算中采用了新提出的非线性点耦合有效相互作用PC-PK 1。研究发现,等势质子-中子对相互作用能显著降低$β$的衰变半衰期。与同位旋相关的isoscope质子-中子配对强度,我们的结果很好地再现实验$β$衰变半衰期,虽然配对强度没有调整使用本研究中计算的半衰期。

英文摘要:

The self-consistent proton-neutron quasiparticle random phase approximation approach is employed to calculate $β$-decay half-lives of neutron-rich even-even nuclei with $8\leqslant Z \leqslant 30$. A newly proposed nonlinear point-coupling effective interaction PC-PK1 is used in the calculations. It is found that the isoscalar proton-neutron pairing interaction can significantly reduce $β$-decay half-lives. With an isospin-dependent isoscalar proton-neutron pairing strength, our results well reproduce the experimental $β$-decay half-lives, although the pairing strength is not adjusted using the half-lives calculated in this study.

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。

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