skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: NEUTRINO EMISSIVITIES FROM DEUTERON BREAKUP AND FORMATION IN SUPERNOVAE

Abstract

Neutrino emissions from electron/positron capture on the deuteron and the nucleon-nucleon fusion processes in a supernova core are studied. These weak processes are evaluated in an approach which consists of one-nucleon and two-nucleon meson-exchange currents and nuclear wave functions generated by a high precision nucleon-nucleon potential. In addition to the cross sections for these processes involving the deuteron, we present neutrino emissivities due to these processes calculated for typical profiles of core-collapsed supernovae. These novel neutrino emissivities are compared with the standard neutrino-emission mechanisms. We find that the electron-type neutrino emissivity due to electron capture on the deuteron is comparable to that on the proton in the deuteron abundant region. The electron-type antineutrino emissivity due to positron capture on the deuteron is much smaller than that on the neutron. The neutrino emissivity through deuteron formation is smaller than the conventional processes, but may be important in a situation where the nucleon-nucleon bremsstrahlung is important. The implications of the new channels involving deuterons for the supernova mechanism are discussed.

Authors:
; ;  [1];  [2]; ;  [3]
  1. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
  2. Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan)
  3. Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208 (United States)
Publication Date:
OSTI Identifier:
22522072
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 801; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANTINEUTRINOS; BOSON-EXCHANGE MODELS; BREMSSTRAHLUNG; COMPARATIVE EVALUATIONS; COSMIC NEUTRINOS; CROSS SECTIONS; DEUTERONS; ELECTRON CAPTURE; EMISSIVITY; NUCLEAR REACTIONS; NUCLEON-NUCLEON POTENTIAL; NUCLEOSYNTHESIS; SUPERNOVAE; WAVE FUNCTIONS

Citation Formats

Nasu, S., Nakamura, S. X., Sato, T., Sumiyoshi, K., Myhrer, F., and Kubodera, K., E-mail: nasu@kern.phys.sci.osaka-u.ac.jp, E-mail: nakamura@kern.phys.sci.osaka-u.ac.jp, E-mail: tsato@phys.sci.osaka-u.ac.jp, E-mail: sumi@numazu-ct.ac.jp, E-mail: myhrer@physics.sc.edu, E-mail: kubodera@physics.sc.edu. NEUTRINO EMISSIVITIES FROM DEUTERON BREAKUP AND FORMATION IN SUPERNOVAE. United States: N. p., 2015. Web. doi:10.1088/0004-637X/801/2/78.
Nasu, S., Nakamura, S. X., Sato, T., Sumiyoshi, K., Myhrer, F., & Kubodera, K., E-mail: nasu@kern.phys.sci.osaka-u.ac.jp, E-mail: nakamura@kern.phys.sci.osaka-u.ac.jp, E-mail: tsato@phys.sci.osaka-u.ac.jp, E-mail: sumi@numazu-ct.ac.jp, E-mail: myhrer@physics.sc.edu, E-mail: kubodera@physics.sc.edu. NEUTRINO EMISSIVITIES FROM DEUTERON BREAKUP AND FORMATION IN SUPERNOVAE. United States. doi:10.1088/0004-637X/801/2/78.
Nasu, S., Nakamura, S. X., Sato, T., Sumiyoshi, K., Myhrer, F., and Kubodera, K., E-mail: nasu@kern.phys.sci.osaka-u.ac.jp, E-mail: nakamura@kern.phys.sci.osaka-u.ac.jp, E-mail: tsato@phys.sci.osaka-u.ac.jp, E-mail: sumi@numazu-ct.ac.jp, E-mail: myhrer@physics.sc.edu, E-mail: kubodera@physics.sc.edu. Tue . "NEUTRINO EMISSIVITIES FROM DEUTERON BREAKUP AND FORMATION IN SUPERNOVAE". United States. doi:10.1088/0004-637X/801/2/78.
@article{osti_22522072,
title = {NEUTRINO EMISSIVITIES FROM DEUTERON BREAKUP AND FORMATION IN SUPERNOVAE},
author = {Nasu, S. and Nakamura, S. X. and Sato, T. and Sumiyoshi, K. and Myhrer, F. and Kubodera, K., E-mail: nasu@kern.phys.sci.osaka-u.ac.jp, E-mail: nakamura@kern.phys.sci.osaka-u.ac.jp, E-mail: tsato@phys.sci.osaka-u.ac.jp, E-mail: sumi@numazu-ct.ac.jp, E-mail: myhrer@physics.sc.edu, E-mail: kubodera@physics.sc.edu},
abstractNote = {Neutrino emissions from electron/positron capture on the deuteron and the nucleon-nucleon fusion processes in a supernova core are studied. These weak processes are evaluated in an approach which consists of one-nucleon and two-nucleon meson-exchange currents and nuclear wave functions generated by a high precision nucleon-nucleon potential. In addition to the cross sections for these processes involving the deuteron, we present neutrino emissivities due to these processes calculated for typical profiles of core-collapsed supernovae. These novel neutrino emissivities are compared with the standard neutrino-emission mechanisms. We find that the electron-type neutrino emissivity due to electron capture on the deuteron is comparable to that on the proton in the deuteron abundant region. The electron-type antineutrino emissivity due to positron capture on the deuteron is much smaller than that on the neutron. The neutrino emissivity through deuteron formation is smaller than the conventional processes, but may be important in a situation where the nucleon-nucleon bremsstrahlung is important. The implications of the new channels involving deuterons for the supernova mechanism are discussed.},
doi = {10.1088/0004-637X/801/2/78},
journal = {Astrophysical Journal},
number = 2,
volume = 801,
place = {United States},
year = {Tue Mar 10 00:00:00 EDT 2015},
month = {Tue Mar 10 00:00:00 EDT 2015}
}