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VOLUME 28 (1978) | ISSUE 4 | PAGE 251
The p-p reactions on the sun (p +p→ D+e+ + ν and p +p+e→ D+ν)
The contribution of exchange currents in p-p reactions on the sun is considered. Arguments are advanced favoring calculations that lead to small corrections. The analysis is based on the establishment of a connection between the investigated reactions and the well known process of radiative n-p capture (likewise at thermal energies). The excepted corrections to the p-p reaction amplitudes for the exchange interband currents amount to δ = 2-3%, which is insufficient to explain the measured intensity of the solar-neutrino flux.