# Reactions induced by $^9$Be in a four-body continuum-discretized coupled-channels framework

## TL;DR

This paper models the elastic scattering of beryllium-9 on lead-208 using a four-body CDCC approach, highlighting the significance of continuum effects especially at energies below the Coulomb barrier.

## Contribution

It introduces a four-body CDCC framework with THO basis for $^9$Be, providing a detailed analysis of continuum effects in scattering.

## Key findings

- Continuum effects are significant at sub-barrier energies.
- The four-body CDCC model accurately describes experimental scattering data.
- The THO basis effectively generates projectile states for the calculations.

## Abstract

We investigate the elastic scattering of $^9$Be on $^{208}$Pb at beam energies above (50 MeV) and below (40 MeV) the Coulomb barrier. The reaction is described within a four-body framework using the Continuum-Discretized Coupled-Channels (CDCC) method. The $^9$Be projectile states are generated using the analytical Transformed Harmonic Oscillator (THO) basis in hyperspherical coordinates. Our calculations confirm the importance of continuum effects at low energies.