Beta-decay and electron capture rates of hot nuclei in stellar matter

18 Apr 2019, 14:30
15m
LIT, JINR

LIT, JINR

Oral Nuclear Physics Nuclear Physics

Speaker

Mr Semyon Sidorov (Moscow State University named after M.V. Lomonosov)

Description

Thermal effects on the electron capture and beta-decays rates are studied for 56Ni embedded in dense and hot matter of the collapsing core of a massive star. The influence of temperature on the strength distributions of GT transitions is considered in the framework of the Skyrme-TQRPA model. It is shown that thermal effects make possible negative- and low-energy GT transitions which are Pauli blocked at zero temperature. The obtained weak-interaction rates are compared with those from the large-scale shell model calculations.

Primary author

Mr Semyon Sidorov (Moscow State University named after M.V. Lomonosov)

Co-authors

Dr Alan Dzhioev (Joint Institute for Nuclear Research, Bogoliubov Laboratory of Theoretical Physics) Dr Tatiana Tretyakova (SINP MSU)

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