β+ decays of 37Ca: Implications for the efficiency of the 37Cl solar ν detector

Details β+ decays of 37Ca: Implications for the efficiency of the 37Cl solar ν detector β+ decays of 37Ca: Implications for the efficiency of the 37Cl solar ν detector

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..67.3654g&link_type=abstract

Physical Review Letters, Volume 67, Issue 26, December 23, 1991, pp.3654-3657

Physics

58

Beta Decay, Double Beta Decay, Electron And Muon Capture, Neutrino Scattering, 20<=A<=38

Scientific paper

We studied 37Ca β+ decays using a mass separated 37Ca beam and a proton telescope with 16-keV resolution. Delayed p's were detected in coincidence with γ's to identify p decays of 37K daughter levels to excited states of 36Ar. We observed 43 previously undetected proton groups, yielding an integrated B(GT) twice as large as that observed previously. Although our result increases the efficiency of the 37Cl detector for counting solar ν's by 6%, its main effect is to reduce uncertainties in this efficiency arising from discrepancies between previous 37Ca β decay and 37Cl(p,n) results.

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