Astrophysical S-Factor of p2H Radiative Capture

TL;DR

This paper calculates the astrophysical S-factor for p2H radiative capture at very low energies using a potential cluster model, aligning well with recent experimental data and providing specific S-factor values.

Contribution

It introduces a potential cluster model approach considering Young's scheme symmetry and E1 transition to accurately describe the S-factor at low energies.

Findings

Good agreement with experimental data for two potential models

Calculated S-factor values: 1.35(5)×10⁻⁴ keVb and 1.65(5)×10⁻⁴ keVb

Energy range considered down to 1 keV

Abstract

The astrophysical S-factor of p2H radiative capture in the energy range down to 1 keV is considered in the potential cluster model with the classification of orbital states according to Young's scheme symmetry. It is shown that the approach used, which takes into account E1 transition only, gives a good description of the new experimental data for two potentials of the bound state of 3He nucleus and leads to the value S=1.35(5) \cdot 10-4 keVb and 1.65(5)\cdot 10-4 keVb.