Measurement of cross sections and astrophysical S-factors for d(p,gamma)3He reaction at astrophysically relevant energies using a large volume LaBr3:Ce detector

TL;DR

This study measures the cross sections and S-factors for the d(p,gamma)3He reaction at energies relevant to astrophysics using a large volume LaBr3:Ce detector, providing new experimental data.

Contribution

It presents new measurements of the reaction cross section and S-factor at energies 66, 116, and 166 keV, using advanced simulations for detector efficiency estimation.

Findings

Measured cross sections agree with literature within errors.

Provided data at energies relevant to Big Bang Nucleosynthesis.

Used GEANT4 simulations for accurate efficiency estimation.

Abstract

In nuclear astrophysics, the experimental scenario is still unclear for BBN relevant energies from 30-300 keV. Here, we report our measurements of cross section and astrophysical S(E) factor for pd capture reaction using proton beam energies 66 keV, 116 keV and 166 keV. Realistic GEANT4 simulations were carried out in order to estimate the energy dependent efficiency of the detector. The measured cross section and astrophysical S(E) factor for three new incident proton energies are found to be in good agreement, within the errors, with the values reported in the literature.