Fission cycling in supernova nucleosynthesis: Active-sterile neutrino oscillations
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27595-8202 (United States)
- Department of Physics, Union College, Schenectady, New York 12308 (United States)
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6374 (United States)
We investigate nucleosynthesis in the supernova post-core bounce neutrino-driven wind environment in the presence of active-sterile neutrino transformation. We consider active-sterile neutrino oscillations for a range of mixing parameters: vacuum mass-squared differences of 0.1 eV{sup 2}{<=}{delta}m{sup 2}{<=}100 eV{sup 2}, and vacuum mixing angles of sin{sup 2}2{theta}{sub v}{>=}10{sup -4}. We find a consistent r-process pattern for a large range of mixing parameters that is in rough agreement with the halo star CS 22892-052 abundances and the pattern shape is determined by fission cycling. We find that the allowed region for the formation of the r-process peaks overlaps the liquid scintillator neutron detector (LSND) and null-short baseline (NSBL) (3+1) allowed region.
- OSTI ID:
- 20782973
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 73, Issue 9; Other Information: DOI: 10.1103/PhysRevD.73.093007; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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