Stellar electron-capture rates calculated with the finite-temperature relativistic random-phase approximation

Abstract

We introduce a self-consistent microscopic theoretical framework for modelling the process of electron capture on nuclei in stellar environment, based on relativistic energy density functionals. The finite-temperature relativistic mean-field model is used to calculate the single-nucleon basis and the occupation factors in a target nucleus, and $J^{\pi }=0^{\pm }$, $1^{\pm }$, $2^{\pm }$ charge-exchange transitions are described by the self-consistent finite-temperature relativistic random-phase approximation. Cross sections and rates are calculated for electron capture on 54,56Fe and 76,78Ge in stellar environment, and results compared with predictions of similar and complementary model calculations.

Physical Review C, accepted

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Cited by in corpus (44)

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• The Sensitivity of Core-Collapse Supernovae to Nuclear Electron Capture
• Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations and $\beta$-decay half-lives
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• Radial basis function approach in nuclear mass predictions
• Electron capture in stars
• Feasibility of the finite amplitude method in covariant density functional theory
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• Nuclear effective charge factor originating from covariant density functional theory
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• Nuclear Weak Rates and Nuclear Weak Processes in Stars
• Contribution of excited states to stellar weak-interaction rates in odd-A nuclei
• Thermal quasiparticle random-phase approximation calculations of stellar electron capture rates with the Skyrme effective interaction
• Nuclear response in a finite-temperature relativistic framework
• Large-scale calculations of supernova neutrino-induced reactions in Z=8-82 target nuclei
• Finite-temperature electron-capture rates for neutron-rich nuclei around N=50 and effects on core-collapse supernovae simulations
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• Hybrid method to resolve the neutrino mass hierarchy by supernova (anti)neutrino induced reactions
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• Validity of Brink Axel Hypothesis for calculations of allowed stellar weak rates of heavy nuclei
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• Study of Gamow-Teller strength and associated weak-rates on odd-A nuclei in stellar matter
• Fine-Grid Calculations for Stellar Electron and Positron Capture Rates on Fe-Isotopes