The Particular Lines in the Solar Neutrino Energy Spectrum

Abstract

In this paper , much attention is given to lines of minimum and maximum neutrino energies. Tritium chain of the hydrogen cycle in the Sun including reactions of 3 He(e - ,ν e ) 3 H(p,γ) 4 is considered. At the distance of 1 a.u. , the flux of tritium neutrinos is equal to 8.1 × 10 4 cm -2 · s -1 . It is an order of magnitude higher than the flux of the (hep)-neutrinos. Radial distribution of 3 H-neutrinos yield inside the Sun and their energy spectrum which has a form of line at the energy of (2.5 - 3.0) keV are calculated. The flux of thermal tritium neutrinos is accompanied by a very weak flux of antineutrin os (~10 3 cm -2 · year -1 ) with energy lower than 18.6 keV. These antineutrinos are produced during Urca processes 3 He 3 H. The flux of the neutrinos of maximum possible energy (line 19.8 MeV) produced due to the (heep)-reaction (related to the (hep)-process) is estimated.