Spin parity of the 7.478 MeV state of 10B and the S factor of the 9Be(p-->,γ0)10B reaction

Details Spin parity of the 7.478 MeV state of 10B and the S factor of the 9Be(p-->,γ0)10B reaction Spin parity of the 7.478 MeV state of 10B and the S factor of the 9Be(p-->,γ0)10B reaction

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phrvc..59.3425g&link_type=abstract

Physical Review C (Nuclear Physics), Volume 59, Issue 6, June 1999, pp.3425-3428

Physics

Nuclear Physics

4

Radiative Capture, Polarization Phenomena In Reactions, 6<=A<=19, Elementary Particle Processes

Scientific paper

Polarized protons were used to measure the analyzing power of the 9Be(p-->,γ)10B reaction for Ep=280-0 keV. The analyzing power for the ground state transition compared to calculations leads to a spin-parity assignment of 2+ for the 7.478 MeV state of 10B. This 2+ assignment is consistent with other observables for this reaction and is predicted by cluster and shell model calculations. It is found that the 2+ assignment leads to a value for the astrophysical S factor for capture to the ground state of 10B of S(0)=0.20 keV b which is about 40% smaller than that obtained with a 2- assignment.

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