Other
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvc..70a5804b&link_type=abstract
Physical Review C, vol. 70, Issue 1, id. 015804
Other
17
6<=A<=19, Elastic Proton Scattering, Reactions Induced By Unstable Nuclei, Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments
Scientific paper
The rates of the 18 F ( p,α ) 15 O and 18 F ( p,γ ) 19 Ne reactions in astrophysical environments depend on the properties of 19 Ne levels above the 18 F +p threshold. There are at least eight levels in the mirror nucleus 19 F for which analogs have not been observed in 19 Ne in the excitation energy range Ex =6.4 7.6 MeV . These levels may significantly enhance the 18 F +p reaction rates, and thus we have made a search for these levels by measuring the 1H ( 18 F ,p ) 18 F excitation function over the energy range Ec.m. =0.3 1.3 MeV . We have identified and measured the properties of a newly observed level at Ex =7.420±0.014 MeV , which is most likely the mirror to the Jπ = 7 /2 + 19 F level at 7.56 MeV . We have additionally found a significant discrepancy with a recent compilation for the properties of a 19 Ne state at Ex =7.5 MeV and set upper limits on the proton widths of missing levels.
Bardayan Daniel W.
Blackmon Jeff C.
Gómez del Campo J.
Kozub Raymond L.
Liang J. F.
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