$β$-decay half-lives at finite temperatures for N=82 isotones

Details $β$-decay half-lives at finite temperatures for N=82 isotones $β$-decay half-lives at finite temperatures for N=82 isotones

2009-09-29

arxiv.org/abs/0909.5283v1

Phys.Rev.C80:065808,2009

Physics

Nuclear Physics

Nuclear Theory

8 pages, 16 figures

Scientific paper

10.1103/PhysRevC.80.065808

Using the finite temperature quasi-particle random phase approximation (FTQRPA) on the basis of finite temperature Skyrme-Hartree-Fock + BCS method, we study $\beta^-$-decay half-lives for even-even neutron magic nuclei with N=82 in a finite temperature environment. We find that the $\beta^-$-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.

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