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

Date
2011
Authors
Niu Y.F.
Paar N.
Vretenar D.
Meng J.
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Abstract
We introduce a self-consistent microscopic theoretical framework for modeling 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 Jπ=0±, 1 ±, and 2± 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 Fe54,56 and Ge76,78 in stellar environment, and results compared with predictions of similar and complementary model calculations. © 2011 American Physical Society.
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Citation
Physical Review C - Nuclear Physics
83
4
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URI
http://hdl.handle.net/10019.1/17120
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Stellenbosch University - Scopus Publications