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• W3214944850 abstract "$ensuremath{beta}$-decay properties of nuclei are investigated within the relativistic nuclear energy density functional framework by varying the temperature and density, conditions relevant to the final stages of stellar evolution. Both thermal and nuclear pairing effects are taken into account in the description of nuclear properties and in the finite-temperature proton-neutron relativistic quasiparticle random-phase approximation (FT-PNRQRPA) to calculate the relevant allowed and first-forbidden transitions in the $ensuremath{beta}$ decay. The temperature and density effects are studied on the $ensuremath{beta}$-decay half-lives at temperatures $T=0$--$1.5phantom{rule{0.16em}{0ex}}mathrm{MeV}$ and at densities $ensuremath{rho}{Y}_{e}={10}^{7}phantom{rule{4pt}{0ex}}mathrm{g}/{mathrm{cm}}^{3}$ and ${10}^{9}phantom{rule{4pt}{0ex}}mathrm{g}/{mathrm{cm}}^{3}$. The relevant Gamow-Teller transitions are also investigated for Ti, Fe, Cd, and Sn isotopic chains at finite-temperatures. We find that the $ensuremath{beta}$-decay half-lives increase with increasing density $ensuremath{rho}{Y}_{e}$, whereas half-lives generally decrease with increasing temperature. It is shown that the temperature effects decrease the half-lives considerably in nuclei with longer half-lives at zero temperature, while only slight changes for nuclei with short half-lives are obtained. We also show the importance of including the de-excitation transitions in the calculation of the $ensuremath{beta}$-decay half-lives at finite-temperatures. Comparing the FT-PNQRPA results with the shell-model calculations for $pf$-shell nuclei, a reasonable agreement is obtained for the temperature dependence of $ensuremath{beta}$-decay rates. Finally, large-scale calculations of $ensuremath{beta}$-decay half-lives are performed at temperatures ${T}_{9}(text{K})=5$ and ${T}_{9}(text{K})=10$ and densities $ensuremath{rho}{Y}_{e}={10}^{7}$ and ${10}^{9}phantom{rule{4pt}{0ex}}mathrm{g}/{mathrm{cm}}^{3}$ for even-even nuclei in the range $8ensuremath{le}Zensuremath{le}82$, relevant for astrophysical nucleosynthesis mechanisms." @default.
• W3214944850 created "2021-12-06" @default.
• W3214944850 creator A5048425173 @default.
• W3214944850 creator A5058777686 @default.
• W3214944850 creator A5061916802 @default.
• W3214944850 creator A5072948664 @default.
• W3214944850 date "2021-11-29" @default.
• W3214944850 modified "2023-10-02" @default.
• W3214944850 title "Evolution of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>β</mml:mi></mml:math> -decay half-lives in stellar environments" @default.
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• W3214944850 doi "https://doi.org/10.1103/physrevc.104.054318" @default.
• W3214944850 hasPublicationYear "2021" @default.
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