Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-05-19
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Scientific paper
Tritium chain of the hydrogen cycle in the Sun including reactions ^3He(e^-,{\nu}_(e))^(3)H(p,{\gamma})^(4)He is considered. At the distance of 1 a.u. the flux of tritium neutrinos is equal to 8.1\cdot 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 {\div} 3,0) keV are calculated. The flux of thermal tritium neutrinos is accompanied by a very weak flux of antineutrinos (~ 10^(3) cm^(-2)year^(-1)) with energy lower than 18,6 keV. These antineutrinos are produced during Urca processes ^3He<=>^3H. 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
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