Solar Neutrino Cross Sections and Nuclear Beta Decay

Creators: Bahcall, John N.

Abstract

The neutrino-producing reactions that are believed to occur in the interior of the sun are reviewed and the predicted neutrino fluxes from these reactions are presented. The relevant absorption cross sections for neutrino-induced transitions from the ground state of Cl^(37) to various states in Ar^(37) are then calculated. The nuclear model adopted in these calculations is also used to predict the decay rates and branching ratios for a number of nuclei with 1d^(n)_(3/2) configurations; comparisons with experiment are made wherever possible and additional tests are suggested. A method for extracting Gamow-Teller matrix elements from mixed transitions between members of the same isotopic multiplet is then illustrated. The theory of bound-state neutrino capture is also outlined and applied to the proposed solar neutrino experiment. In an Appendix, some neutrino cross sections that are useful in interpreting the reactor experiment of Davis are presented.

Additional Information

© 1964 The American Physical Society. Received 10 February 1964; published in the issue dated July 1964. Supported in part by the U. S. Office of Naval Research and in part by the National Aeronautics and Space Administration. I am grateful to Raymond Davis, Jr., and R. L. Sears for many valuable suggestions. It is a pleasure to acknowledge stimulating discussions with C. A. Barnes, J. Eichler, W. A. Fowler, I. Iben, Jr., R. W. Kavanagh, B. R. Mottelson, and M.A. Preston. Many of the calculations were performed with the generous programming assistance of P. A. Seeger and B. A. Zimmerman.

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