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

Journal Article · Sun Apr 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.042801· OSTI ID:20995191

Sonoda, Hidetaka ^[1]; Watanabe, Gentaro ^[2]; Sato, Katsuhiko ^[1]; Takiwaki, Tomoya ^[1]; Yasuoka, Kenji ^[3]; Ebisuzaki, Toshikazu ^[4]

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1. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)
2. NORDITA, Blegdamsvej 17, DK-2100 Copenhagen O (Denmark)
3. Department of Mechanical Engineering, Keio University, Yokohama 223-8522 (Japan)
4. Institute of Chemical and Physical Research (RIKEN), Saitama 351-0198 (Japan)

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.

• OSTI ID: 20995191
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 75, Issue 4; Other Information: DOI: 10.1103/PhysRevC.75.042801; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

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