New experiments demand for a more precise analysis of continuum spectrum in 6He: technical details and formalism

TL;DR

This paper extends a three-body model of 6He to include sd-continuum states, providing a detailed formalism for analyzing continuum contributions to its nuclear structure and responses.

Contribution

It introduces a formalism to incorporate sd-continuum states into 6He modeling, enabling more precise analysis of continuum effects.

Findings

Inclusion of sd-continuum states enhances understanding of 6He structure.

Method facilitates calculation of various nuclear response functions.

Provides a foundation for future detailed continuum response studies.

Abstract

A simple three-body model of 6He is extended to include sd-continuum states in the picture in addition to the already investigated p-states. The role of different continuum components in the weakly bound nucleus 6He is studied by coupling unbound spd-waves of 5He by using simple pairing contact-delta interaction. The main focus of this paper is to outline the procedure that allows the calculation of different configurations of 6He including continuum states and to set up basic ingredients for computations. The method and results discussed here will be used for the calculation of monopole, dipole, quadrupole and octupole response of 6He.