9Be(p-->,d)8Be and 9Be(p-->,α)6Li reactions at low energies

Details 9Be(p-->,d)8Be and 9Be(p-->,α)6Li reactions at low energies 9Be(p-->,d)8Be and 9Be(p-->,α)6Li reactions at low energies

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phrvc..57.3437b&link_type=abstract

Physical Review C (Nuclear Physics), Volume 57, Issue 6, June 1998, pp.3437-3446

Physics

Nuclear Physics

6

Big Bang Nucleosynthesis, Polarization Phenomena In Reactions, 6<=A<=19

Scientific paper

Angular distributions of cross section and vector analyzing power have been measured for the 9Be(p-->,d)8Be and 9Be(p-->,α)6Li reactions for 77<=Ep<=321 keV. Previous work has suggested that that the low-energy cross section is enhanced by the Ex=6.57 MeV subthreshold level in 10B. The analyzing power measurements are particularly sensitive to the presence of the subthreshold level, leading to a definitive test of the hypothesis. The data are analyzed in terms of R-matrix and direct reaction calculations. We find that the magnitude and angular distribution of the 9Be(p,d)8Be reaction at very low energies can be explained by the direct reaction mechanism without any contribution from the subthreshold resonance. The implications of these results for the stellar reaction rate of the 9Be(p,d)8Be and 9Be(p,α)6Li reactions are discussed.

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