Nuclear 'pasta phase' and its consequences on neutrino opacities

Journal Article · Tue Mar 15 00:00:00 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, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevC.83.035803; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

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