Neutrino breakup of A=3 nuclei in supernovae

Journal Article · Tue May 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.055803· OSTI ID:20995332

O'Connor, E ^[1]; Gazit, D; Barnea, N ^[2]; Horowitz, C J ^[3]; Schwenk, A ^[1]

---

1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
2. Racah Institute of Physics, Hebrew University, 91904 Jerusalem (Israel)
3. Nuclear Theory Center and Department of Physics, Indiana University, Bloomington, Indiana 47408 (United States)

We extend the virial equation of state to include {sup 3}H and {sup 3}He nuclei, and predict significant mass-three fractions near the neutrinosphere in supernovae. While alpha particles are often more abundant, we demonstrate that energy transfer cross sections for muon and tau neutrinos at low densities are dominated by breakup of the loosely-bound {sup 3}H and {sup 3}He nuclei. The virial coefficients involving A=3 nuclei are calculated directly from the corresponding nucleon-{sup 3}H and nucleon-{sup 3}He scattering phase shifts. For the neutral-current inelastic cross sections and the energy transfer cross sections, we perform ab initio calculations based on microscopic two- and three-nucleon interactions and meson-exchange currents.

• OSTI ID: 20995332
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
BOSON-EXCHANGE MODELS
CROSS SECTIONS
DENSITY
ENERGY TRANSFER
HELIUM 3
MASS NUMBER
MUONS
NEUTRAL CURRENTS
NUCLEONS
PHASE SHIFT
SCATTERING
TAU NEUTRINOS
TRITIUM
VIRIAL EQUATION