Astrophysical S-factor for the 2H(ρ,γ)3He reaction at big-bang nucleosynthesis energies
2020
We report on our latest experimental study of the 2 H(ρ,γ)3 He reaction in the energy range of interest for big-bang nucleosynthesis. The differential cross section at 135° and γ)-ray angular distributions were measured and compared with the results deduced from the latest ab-initio calculation. The astrophysical S-factor for the 2 H(ρ,γ)3 He reaction was obtained in the center-of-mass energy range E = 97-210 keV, and it is found to be in reasonable agreement with that predicted by the ab-initio calculation.
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