High-resolution study of 37Cl-->37Ar Gamow-Teller transition via 37Cl(3He, t)37Ar reaction

Details High-resolution study of 37Cl-->37Ar Gamow-Teller transition via 37Cl(3He, t)37Ar reaction High-resolution study of 37Cl-->37Ar Gamow-Teller transition via 37Cl(3He, t)37Ar reaction

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1269..201s&link_type=abstract

THE 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: OMEG-2010. AIP Conference Proceedings, Volume 1

Mathematics

Probability

Transition Probability (Atoms And Molecules), Beta-Decay, Solar Neutrinos, Nuclear Spin, Electromagnetic Transitions, Relation With Nuclear Matrix Elements And Nuclear Structure, Solar Interior, Spin, Parity, And Isobaric Spin

Scientific paper

We performed a 37Cl(3He, t)37Ar experiment at E = 140 MeV/nucleon and 0° with a resolution of 30 keV. The Gamow-Teller (GT) strength distribution was obtained up to the excitation energy (Ex) of 14.2 MeV in 37Ar. Under the assumption of isospin symmetry, the GT strengths in the 37Cl-->37Ar and 37Ca-->37K transitions are analogous. The obtained strength distribution was compared with the mirror 37Ca β decay up to Ex = 8.6 MeV. The overall shapes of the distributions were similar, but the details were not necessary the same. In order to understand those differences, the experimental distribution was compared with the shell model (SM) calculation using the USD interaction. The SM calculation suggests that differences at lower energies can be caused by a large tensor contribution in the charge-exchange reaction. On the other hand, the differences seen at higher energies are due to the breaking of the mirror symmetry. The neutrino cross section for the 8B solar neutrino source was calculated using the obtained data.

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