Thermonuclear Processes for Three Body System in the Potential Cluster Model

TL;DR

This paper models thermonuclear processes in a three-body system using a modified potential cluster approach, focusing on neutron and proton radiative captures on deuterium relevant to astrophysics and primordial nucleosynthesis.

Contribution

It introduces a modified potential cluster model with Young tableaux classification to analyze radiative capture processes on deuterium at astrophysical energies.

Findings

Methods based on phase shift analysis and bound state characteristics were developed.

The model successfully describes proton capture in the solar pp cycle.

Neutron capture processes relevant to primordial nucleosynthesis were analyzed.

Abstract

The manuscript is devoted to the description of the results obtained in the frame of the modified potential cluster model with the classification of states according to Young tableaux for neutron and proton radiative capture processes on 2H at thermal and astrophysical energies. It demonstrates methods of application that were obtained on the basis of phase shift analysis and characteristics of the bound states of 2H potentials for consideration of the radiative capture processes. First reaction of the proton capture directly takes part in the pp solar cycle, where it is the second reaction. The neutron capture is not a part of usual thermonuclear cycles in the Sun and stars, but can take part in the processes of primordial nucleosynthesis, following at formation and evolution of our entire Universe.