Beta‐decay half‐lives at finite temperatures with the Skyrme‐QRPA Available to Purchase

Using finite temperature quasi‐particle random phase approximation (FTQRPA) on the basis of finite temperature Skyrme‐Hartree‐Fock + BCS method, we study $β−$‐decay half‐lives for even‐even neutron magic nuclei with $N = 82$ in a finite temperature environment. We find that the $β−$‐decay half‐life first decreases as the temperature increases for all the nuclei we study although the thermal effect is found to be small at temperatures relevant to r‐process nucleosynthesis. Our calculations indicate that the half‐life begins to increase at high temperatures for open shell nuclei. We discuss this behavior in connection to the pairing phase transition.