Neutrino deuteron reaction in the heating mechanism of core-collapse supernovae

Journal Article · Tue Sep 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.035802· OSTI ID:21293880

Nakamura, S X ^[1]; Sumiyoshi, K ^[2]; Sato, T ^[3]

---

1. Instituto de Fisica, Universidade de Sao Paulo, C.P. 66318, 05315-970, Sao Paulo, SP (Brazil)
2. Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan)
3. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)

We examine a potential role of the neutrino deuteron reactions in the mechanism of supernovae explosion by evaluating the energy transfer cross section for the neutrino heating. We calculate the energy loss rate due to the neutrino absorptions through the charged-current process as well as the neutrino scattering through the neutral-current process. In so doing, we adopt a detailed evaluation of cross sections for the neutrino deuteron reactions with the phenomenological Lagrangian approach. We find the energy transfer cross section for the deuteron is larger than those for {sup 3}H, {sup 3}He, and {sup 4}He for neutrino temperatures (T{sub {nu}}{approx}4 MeV) relevant to the supernovae core. Because of the low-energy threshold for the deuteron breakup, the energy transfer rate rapidly increases from low temperature, T{sub {nu}}{approx}1 MeV. This suggests that the neutrino deuteron reactions may contribute effectively to the heating mechanism during the dissociation of irons into light elements and nucleons in the shocked material of the supernovae core.

• OSTI ID: 21293880
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
CHARGED CURRENTS
COMPUTERIZED SIMULATION
CROSS SECTIONS
DEUTERON REACTIONS
DEUTERONS
DISSOCIATION
ENERGY LOSSES
ENERGY TRANSFER
HEATING
HELIUM 3
HELIUM 4
LAGRANGIAN FUNCTION
MEV RANGE 01-10
NEUTRAL CURRENTS
NEUTRINOS
NUCLEONS
SCATTERING
SUPERNOVAE
TRITIUM