Nuclear structure properties of astrophysical importance for Ne-19 above the proton threshold energy

作者:Nesaraja C D*; Shu N; Bardayan D W; Blackmon J C; Chen Y S; Kozub R L; Smith M S
来源:Physical Review C, 2007, 75(5): 055809.
DOI:10.1103/PhysRevC.75.055809

摘要

Knowledge of the F-18(p,alpha)O-15 and F-18(p,gamma)Ne-19 astrophysical reaction rates are important to understand gamma-ray emission from nova explosions and heavy-element production in x-ray bursts. The rates for these reactions have been uncertain, in part due to a lack of a comprehensive examination of the available structure information in the compound nucleus Ne-19. We have examined the latest experimental measurements with radioactive and stable beams, collected all the structure information in the nucleus Ne-19 and its mirror F-19, and made estimates of unmeasured Ne-19 nuclear-level parameters. These parameters will be useful for future reaction rate calculations.