Department of Chemistry, University of Missouri-Rolla. PROTON CAPTURE ON 1abstractACS99
4N GENERATES EXCESS 15N IN THE SOLAR WIND. The early Apollo missions to the moon and the recent Galileo probe of Jupiter revealed values of the 15N/14N ratio in the solar wind that increased over geologic time [Rev. Geophys. 31
(1993) 423] and strange isotopic abundances of xenon in Jupiter [J. Radioanal. Nucl. Chem. 238
(1998) 119]. The first observation could not be deciphered until the second confirmed that diffusion inside the Sun enriches lighter elements at the solar surface [Meteorit. Planet. Sci. 33
(1998) A97]. Thus, the 1H + 14N => 15O => 15N + - - rn outside the solar core causes a temporal increase in the 15N/14N ratio in the solar wind. Solar flares disrupt such fusion reactions, leading to an inverse correlation between the solar neutrino flux and sunspot number [Physics Today 43
(1990) 17], and dredge up nitrogen with lower 15N/14N values.