LXXI International conference "NUCLEUS – 2021. Nuclear physics and elementary particle physics. Nuclear physics technologies"

Radiative Capture in the $^4$He + $^2$H System in the Framework of a Microscopic Approach

Not scheduled

25m

Oral report Section 2. Experimental and theoretical studies of nuclear reactions. Section 2. Experimental and theoretical studies of nuclear reactions

Speaker

Dr Alexander Solovyev (Dukhov Automatics Research Institute (VNIIA))

Description

The nuclear $^4$He + $^2$H system is of great importance to nuclear astrophysics. Radiative capture proceeding in this system is responsible for production of the $^6$Li nuclei during the primordial nucleosynthesis. In this work, the $^4$He + $^2$H radiative capture is considered from the microscopic viewpoint within a developed approach [1, 2] based on clustering aspects of nuclear structure and dynamics and formalism of expansions over the oscillator basis. The cross section in terms of the astrophysical $S$ factor for the reaction are calculated. The low-energy dependence of the astrophysical $S$ factor serves as a source of information useful for the so-called second “lithium puzzle”. A comparison of the calculated results with experimental data is performed.

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1. A.S. Solovyev and S.Yu. Igashov, Phys. Rev. C 96, 064605 (2017).
2. A.S. Solovyev and S.Yu. Igashov, Phys. Rev. C 99, 054618 (2019).