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Title: Impact of nuclear 'pasta' on neutrino transport in collapsing stellar cores

Abstract

Nuclear 'pasta', nonspherical nuclei in dense matter, is predicted to occur in collapsing supernova cores. We show how pasta phases affect the neutrino transport cross section via weak neutral current using several nuclear models. This is the first calculation of the neutrino opacity of the phases with rod-like and slab-like nuclei taking account of finite temperature effects, which are well described by the quantum molecular dynamics. We also show that pasta phases can occupy 10-20% of the mass of supernova cores in the later stage of the collapse.

Authors:
 [1];  [2];  [3];  [2];  [1];  [4];  [1];  [5];  [6]
  1. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
  2. (RIKEN), Saitama 351-0198 (Japan)
  3. NORDITA, Blegdamsvej 17, DK-2100 Copenhagen O (Denmark)
  4. (Japan)
  5. Department of Mechanical Engineering, Keio University, Yokohama 223-8522 (Japan)
  6. Institute of Chemical and Physical Research (RIKEN), Saitama 351-0198 (Japan)
Publication Date:
OSTI Identifier:
20995191
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.75.042801; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CROSS SECTIONS; MASS; MOLECULAR DYNAMICS METHOD; NEUTRINO-NUCLEON INTERACTIONS; NEUTRINOS; NUCLEAR CORES; NUCLEAR MATTER; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; OPACITY; SUPERNOVAE; TEMPERATURE DEPENDENCE; WEAK NEUTRAL CURRENTS

Citation Formats

Sonoda, Hidetaka, Institute of Chemical and Physical Research, Watanabe, Gentaro, Institute of Chemical and Physical Research, Sato, Katsuhiko, Research Center for the Early Universe, University of Tokyo, Tokyo 113-0033, Takiwaki, Tomoya, Yasuoka, Kenji, and Ebisuzaki, Toshikazu. Impact of nuclear 'pasta' on neutrino transport in collapsing stellar cores. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.042801.
Sonoda, Hidetaka, Institute of Chemical and Physical Research, Watanabe, Gentaro, Institute of Chemical and Physical Research, Sato, Katsuhiko, Research Center for the Early Universe, University of Tokyo, Tokyo 113-0033, Takiwaki, Tomoya, Yasuoka, Kenji, & Ebisuzaki, Toshikazu. Impact of nuclear 'pasta' on neutrino transport in collapsing stellar cores. United States. doi:10.1103/PHYSREVC.75.042801.
Sonoda, Hidetaka, Institute of Chemical and Physical Research, Watanabe, Gentaro, Institute of Chemical and Physical Research, Sato, Katsuhiko, Research Center for the Early Universe, University of Tokyo, Tokyo 113-0033, Takiwaki, Tomoya, Yasuoka, Kenji, and Ebisuzaki, Toshikazu. Sun . "Impact of nuclear 'pasta' on neutrino transport in collapsing stellar cores". United States. doi:10.1103/PHYSREVC.75.042801.
@article{osti_20995191,
title = {Impact of nuclear 'pasta' on neutrino transport in collapsing stellar cores},
author = {Sonoda, Hidetaka and Institute of Chemical and Physical Research and Watanabe, Gentaro and Institute of Chemical and Physical Research and Sato, Katsuhiko and Research Center for the Early Universe, University of Tokyo, Tokyo 113-0033 and Takiwaki, Tomoya and Yasuoka, Kenji and Ebisuzaki, Toshikazu},
abstractNote = {Nuclear 'pasta', nonspherical nuclei in dense matter, is predicted to occur in collapsing supernova cores. We show how pasta phases affect the neutrino transport cross section via weak neutral current using several nuclear models. This is the first calculation of the neutrino opacity of the phases with rod-like and slab-like nuclei taking account of finite temperature effects, which are well described by the quantum molecular dynamics. We also show that pasta phases can occupy 10-20% of the mass of supernova cores in the later stage of the collapse.},
doi = {10.1103/PHYSREVC.75.042801},
journal = {Physical Review. C, Nuclear Physics},
number = 4,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}
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