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

Valery Aleksandrovich Varlachev, Геннадий Николаевич Дудкин, B. A. Nechaev, Ф. М. Пеньков, Mariusz Filipowicz, Aleksandr V. Philippov, D. S. Flusova, D. K. Chumakov, E. N. Shuvalov

2021

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DOI 10.1134/s0021364021040111

Data confidence 70 medium

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Abstract

The T(1H, γ)4He reaction has been studied for the first time in the energy range Elab = 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 4He 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(1H, γ)4He reaction by several times. The theoretical calculations of the S-factor of the T(1H, γ)4He reaction still differ from the experimental values by a factor of about 2.