Physics – Nuclear Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009phrvc..79e8801m&link_type=abstract
Physical Review C, vol. 79, Issue 5, id. 058801
Physics
Nuclear Physics
15
Spin, Parity, And Isobaric Spin, 6<=A<=19, Interaction And Reaction Cross Sections, Explosive Burning In Accreting Binary Systems
Scientific paper
The largest nuclear physics uncertainty in studies of gamma-ray emission from novae arises from the F18(p,α)O15 reaction rate that affects the abundance of F18. Direct measurements have been made of the F18(p,p)F18 and F18(p,α)O15 reaction differential cross sections in the energy range 0.6⩽Ec.m.⩽1.6 MeV. Several resonances have been observed in both measurements, with simultaneous R-matrix fits used to determine the properties of corresponding states in Ne19. A recently reported state at 7.420 MeV is not seen, while new states are seen including one of Jπ=(3)/(2)+. A candidate for a recently predicted broad Jπ=(1)/(2)+ state is seen, which would have significant impact on the low energy F18(p,α)O15 reaction rate, but its alpha width is significantly smaller than expected.
Angulo Carmen
Buchmann Lothar
Davinson T.
Descouvemont Pierre
Fox S. P.
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