Skyrme张量相互作用对可能的等待点原子核β衰变半衰期的影响（英文）

Effects of Skyrme Tensor Interactions on the β Decay Half-lives in Possible Waiting Point Nuclei

使用基于Skyrme相互作用的HFB+QRPA模型研究N～82和126的同中子异位素链的β-衰变的半衰期。在计算中所使用的张量相互作用和同位旋标量(IS)对相互作用都是很好地被约束了的。比较了张量相互作用和IS对相互作用对半衰期的影响。IS对相互作用的强度与相应的同位旋矢量(IV)对相互作用的强度相当时,对N～82和126的同中子异位素链中有大的中子过剩的原子核的半衰期影响很微弱。而张量相互作用采用最近约束的强度时对半衰期的影响非常显著。

The β-decay half-lives of N～80 and 126 isotonic chains are calculated with HFB＋QRPA models based on Skyrme force. In the calculations, the well constrained Skyrme tensor interaction and isoscalar spin-triplet（IS） pairing interaction are included so that to study their effects on the half-lives.The effects of tensor interaction and IS pairing interaction on the half-lives are compared. The IS pairing interaction with strength similar to that of isovector（IV） one produces only a trivial effect in N～82 nuclei, and N～126 nuclei with big neutron excess. While the tensor interaction with presently constrained strengths produces an obvious effect.