论文标题

等效配对相互作用强度的物理特征,由双重电荷变化和双重对之间的关​​系确定

Physical features of strength of isoscalar pairing interaction determined by relation between double charge change and double pair transfer

论文作者

Terasaki, J.

论文摘要

已经提出了一种新方法来确定适用于许多核的等构质子中性配对相互作用的强度。原理是双电荷变化与类似粒子对的双重传递之间的等价性,并将约束得出与近似值中使用的有效相互作用的约束。该方法应用于准粒子随机相近似,以确定相互作用强度。在本文中,对该方法的细节进行了详尽的解释,并将应用于双$β$衰减的几个实例的核。从中壳效应方面可以理解针对这些核的强度的系统学。在Gamow-Teller强度函数与实验数据的比较的两个示例中,研究了新的相互作用强度的效果。还计算了中微子双$β$衰减的核基质元素。

A new method has been proposed to determine the strength of the isoscalar proton-neutron pairing interaction applicable to many nuclei. The principle is the equivalence between the double charge change and the double transfer of like-particle pair, and a constraint is derived to the effective interactions used in approximations. This method was applied to the quasiparticle random-phase approximation for determining that interaction strength. In this paper, detail of this method is explained thoroughly, and applications are made to nuclei of several instances of the double-$β$ decays. The systematics of the strengths determined for those nuclei is understood in terms of a midshell effect. The effect of the new interaction strength is examined in two examples of the Gamow-Teller strength function with comparisons with the experimental data. The nuclear matrix elements of the neutrinoless double-$β$ decay are also calculated.

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