Measurement of the S -Factor of the T( 1 H, γ) 4 He Reaction at Astrophysical Energies

摘要

The T(~(1)H, γ)~(4)He reaction has been studied for the first time in the energy range E _(lab)= 12–34 keV in the laboratory coordinate system ( E = 7.8–20.1 keV in the center-of-mass system). The study of this reaction is of interest because it is involved in the primary nucleosynthesis of~(4)He and is important for the theory of few-nucleon systems. The reported experiment improves the accuracy of the experimental determination of the S -factor of the T(~(1)H, γ)~(4)He reaction by several times. The theoretical calculations of the S -factor of the T(~(1)H, γ)~(4)He reaction still differ from the experimental values by a factor of about 2.