Mixing and the solar neutrino problem

Details Mixing and the solar neutrino problem Mixing and the solar neutrino problem

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...349..641s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 349, Feb. 1, 1990, p. 641-646.

Astronomy and Astrophysics

Astrophysics

24

Solar Interior, Solar Neutrinos, Solar Simulation, Stellar Evolution, Nuclear Fusion, Stellar Models

Scientific paper

Evolutionary sequences for the sun were calculated assuming continuous or episodic mixing of matter in the solar interior. The ad hoc mixing affects solar neutrino emission because it increases the interior H-1 and He-3 content and reduces the temperature at the solar center. For a typical postulated massive mixing 'event', the flux of the basic pp neutrinos is strongly reduced for about 10 million yr following the mixing, and the B-8 neutrino is greatly decreased for more than 10 to the 8th yr. The flux of hep neutrinos is significantly increased for about 100,000 yr. The neutrino fluxes calculated from the standard (unmixed) solar model obtained here with an independent numerical code agree with the neutrino fluxes of Bahcall and Ulrich (1988) to an accuracy of a few percent or better.

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