The solar neutrino capture cross section for 81Br

Details The solar neutrino capture cross section for 81Br The solar neutrino capture cross section for 81Br

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981nupha.367..517h&link_type=abstract

Nuclear Physics A, Volume 367, Issue 3, p. 517-525.

Physics

Nuclear Physics

14

Scientific paper

The solar neutrino capture rate for the reaction 81Br + νe --> 81Kr + e- is calculated for the standard solar and weak interaction models. The results show that the capture cross section is dominated by the lowest Gamow-Teller transition to the metastable 1/2- (0.190 MeV) state in 81Kr. As the inverse electron capture rate for this transition has been measured recently, one can then argue that the cross section is well determined experimentally. Thus uncertainties in nuclear physics should not be an obstacle to the recently proposed 81Br radiochemical measurement of the 7Be solar neutrino flux.
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