Neutrino-induced reactions on {sup 56}Fe and {sup 56}Ni, and production of {sup 55}Mn in population III stars

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.061603· OSTI ID:21289896

Suzuki, Toshio ^[1]; Honma, Michio ^[2]; Higashiyama, Koji ^[3]; Yoshida, Takashi; Umeda, Hideyuki ^[4]; Kajino, Toshitaka ^[4]; Otsuka, Takaharu ^[5]; Nomoto, Ken'ichi ^[4]

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1. Department of Physics, College of Humanities and Sciences, Nihon University Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan)
2. Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima (Japan)
3. Department of Physics, Chiba Institute of Technology, Narashino, Chiba 275-0023 (Japan)
4. Department of Astronomy, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033 (Japan)
5. Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

Neutrino-induced reactions on {sup 56}Fe and {sup 56}Ni are investigated based on a new shell-model Hamiltonian for pf shell. The calculated charged current reaction cross section on {sup 56}Fe induced by decay-at-rest (DAR) neutrinos is shown to be consistent with the observation. The Gamow-Teller strength in {sup 56}Ni is found to be more spread compared to previous calculations and result in a considerably large branching ratio for the proton knock-out channel. As a consequence of this, the production yields of heavy elements such as {sup 55}Mn in population III stars are shown to be enhanced for the new Hamiltonian.

• OSTI ID: 21289896
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 6; Other Information: DOI: 10.1103/PhysRevC.79.061603; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BRANCHING RATIO
CHARGED CURRENTS
COMPUTERIZED SIMULATION
CROSS SECTIONS
GAMOW-TELLER RULES
HAMILTONIANS
IRON 56
MANGANESE 55
NEUTRINOS
NICKEL 56
PROTONS
SHELL MODELS
STARS