Appearance of light clusters in post-bounce evolution of core-collapse supernovae

Journal Article · Thu May 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.055804· OSTI ID:21190019

Sumiyoshi, Kohsuke; Roepke, Gerd ^[1]

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1. Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan)

We explore the abundance of light clusters in core-collapse supernovae at post-bounce stage in a quantum statistical approach. Adopting the profile of a supernova core from detailed numerical simulations, we study the distribution of light bound clusters up to {alpha} particles (2{<=}A{<=}4) as well as heavy nuclei (A>4) in dense matter at finite temperature. Within the frame of a cluster-mean-field approach, the abundances of light clusters are evaluated accounting for self-energy, Pauli blocking, and effects of continuum correlations. We find that deuterons and tritons, in addition to {sup 3}He and {sup 4}He, appear abundantly in a wide region from the surface of the proto-neutron star to the position of the shock wave. The appearance of light clusters may modify the neutrino emission in the cooling region and the neutrino absorption in the heating region and, thereby, influence the supernova mechanism.

• OSTI ID: 21190019
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ALPHA PARTICLES
CHANNELING
CORRELATIONS
DEUTERONS
DISTRIBUTION
EMISSION
HEATING
HEAVY NUCLEI
HELIUM 3
HELIUM 4
MEAN-FIELD THEORY
NEUTRINOS
NEUTRON STARS
SELF-ENERGY
SHOCK WAVES
SIMULATION
SUPERNOVAE
SURFACES
TRITONS