Nuclear 'pasta phase' and its consequences on neutrino opacities

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.035803· OSTI ID:21499530

Alloy, M D ^[1]; Menezes, D P ^[2]

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1. Universidade Federal da Fronteira Sul, Chapeco, SC, CEP 89.812-000 (Brazil)
2. Departamento de Fisica CFM, Universidade Federal de Santa Catarina, Florianopolis, SC CP.476, CEP 88.040-900 (Brazil)

In this paper, we calculate the diffusion coefficients that are related to the neutrino opacities considering the formation of nuclear pasta and homogeneous matter at low densities. Our results show that the mean-free paths are significantly altered by the presence of nuclear pasta in stellar matter when compared with the results obtained with homogeneous matter. These differences in neutrino opacities certainly influence the Kelvin-Helmholtz phase of protoneutron stars and consequently the results of supernova explosion simulations.

• OSTI ID: 21499530
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
BINARY STARS
COMPUTERIZED SIMULATION
DENSITY
DIFFUSION
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
EXPLOSIONS
FERMIONS
HELMHOLTZ INSTABILITY
INSTABILITY
LEPTONS
MASSLESS PARTICLES
MEAN FREE PATH
NEUTRINOS
NEUTRON STARS
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SIMULATION
STARS
SUPERNOVAE
VARIABLE STARS