Astrophysically Important 26Si States Studied with the 28Si(p,t)26Si Reaction - II. Spin of the 5.914-MeV 26Si Level and Galactic 26Al Production
- ORNL
- University of Tennessee, Knoxville (UTK)
- Tennessee Technological University
- Rutgers University
- University of North Carolina, Chapel Hill
The {sup 28}Si(p,t){sup 26}Si reaction has been studied to resolve a controversy surrounding the properties of the {sup 26}Si level at 5.914 MeV and its contribution to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate in novae, which affects interpretations of galactic {sup 26}Al observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0+ or 3+), with a 3+ assignment implying a large contribution by this level to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate. We have extended our previous study to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the {sup 28}Si(p,t){sup 26}Si reaction to be consistent with either a 2+ or 3+ assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the {sup 25}Al(p,{gamma}){sup 26}Si rate on {sup 26}Al production in novae.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Holifield Radioactive Ion Beam Facility (HRIBF)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 931873
- Journal Information:
- Physical Review C, Vol. 74, Issue 4; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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