Tensor interaction effects on stellar electron capture and beta-decay rates
Seminars
Low-Energy Nuclear Physics Seminar
Date and Time: Tuesday, 26 November 2019, at 11:00 AM
Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: «Tensor interaction effects on stellar electron capture and beta-decay rates»
Authors: S. V. Sidorov1, Alan A. Dzhioev1, A.I. Vdovin1, T.Yu. Tretyakova2
1 – Bogoliubov Laboratory of Theoretical Physics, JINR
2 – Skobeltzyn Institute of Nuclear Physics, Lomonosov Moscow State
University
Speaker: S. V. Sidorov
Abstract:
Analysis of the tensor interaction effects on the Gamow-Teller (GT) strength function is carried out for hot nuclei embedded in stellar matter. The GT strength functions, as well as electron capture and β-decay rates for 56,78Ni, are calculated within a thermodynamically consistent approach based on thermal QRPA with the Skyrme interaction. Various Skyrme interactions are used in order to study the sensitivity of the obtained results on the Skyrme force parameters. It is shown that the increase of temperature leads to amplification of tensor correlation effects on
the GT strength function.