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Title:
Asymmetric nuclear light clusters in supernova matter
Authors:
Yudin, A. V.; Hempel, M.; Blinnikov, S. I.; Nadyozhin, D. K.; Panov, I. V.
Affiliation:
AA(Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117218 Moscow, Russia), AB(Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland), AC(Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117218 Moscow, Russia), AD(Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117218 Moscow, Russia; National Research Center `Kurchatov Institute', Akademika Kurchatova pl. 1, 123182, Moscow, Russia), AE(Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117218 Moscow, Russia; National Research Center `Kurchatov Institute', Akademika Kurchatova pl. 1, 123182, Moscow, Russia)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 4, p.5426-5433 (MNRAS Homepage)
Publication Date:
03/2019
Origin:
OUP
Astronomy Keywords:
equation of state, abundances
Abstract Copyright:
2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
DOI:
10.1093/mnras/sty3468
Bibliographic Code:
2019MNRAS.483.5426Y

Abstract

We explore the appearance of light clusters at high densities of collapsing stellar cores. Special attention is paid to the unstable isotope 4H, which was not included in previous studies. The importance of light clusters in the calculation of rates for neutrino matter interaction is discussed. The main conclusion is that thermodynamic quantities are only weakly sensitive to the chemical composition. The change in pressure and hence the direct change in collapse dynamics will be minor. But the change in neutrino heating and neutronization processes can be significant.
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