The Skyrme-TQRPA calculations of electron capture on hot nuclei in pre-supernova environment


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Abstract

We combine the thermal QRPA approach with the Skyrme energy density functional theory (Skyrme–TQRPA) for modelling the process of electron capture on nuclei in supernova environment. For a sample nucleus, 56Fe, the Skyrme–TQRPA approach is applied to analyze thermal effects on the strength function of GT+ transitions which dominate electron capture at Ee ≤ 30 MeV. Several Skyrme interactions are used in order to verify the sensitivity of the obtained results to the Skyrme force parameters. Finite-temperature cross sections are calculated and the results are comparedwith those of the other model calculations.

About the authors

Alan A. Dzhioev

Bogoliubov Laboratory of Theoretical Physics

Author for correspondence.
Email: dzhioev@theor.jinr.ru
Russian Federation, Dubna

A. I. Vdovin

Bogoliubov Laboratory of Theoretical Physics

Email: dzhioev@theor.jinr.ru
Russian Federation, Dubna

Ch. Stoyanov

Institute for Nuclear Research and Nuclear Energy

Email: dzhioev@theor.jinr.ru
Bulgaria, Sofia

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