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arXiv · 0909.5283

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

F. Minato·K. Hagino
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Abstract

Using the 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.

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F. Minato, K. Hagino. 2009-09-29. $β$-decay half-lives at finite temperatures for N=82 isotones. https://doi.org/10.1103/physrevc.80.065808

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