Exploring the breakup and transfer coupling effects in 9Be elastic scattering

TL;DR

This study investigates how different cluster breakup and transfer effects influence 9Be elastic scattering with various targets, highlighting the importance of specific breakup channels at different energies and their impact on scattering data.

Contribution

It compares two cluster models of 9Be, analyzing their breakup and transfer effects on elastic scattering, and examines the resulting dynamic polarization potentials.

Findings

Breakup effects are significant for 5He+4He at above barrier energies.

Breakup effects are dominant at lower energies for 8Be+n.

Adding neutron transfer improves data description across systems.

Abstract

Two cluster structures of 9Be namely, 5He+4He and 8Be+n have been considered for its breakup to describe the available data on elastic scattering for 9Be projectile with 28Si, 64Zn and 144Sm targets. The results of these calculations suggest that the breakup coupling effects are significant for 5He+4He cluster model at above the barrier energies, while they are dominant at relatively lower energies for 8Be+n model. The addition of one neutron stripping channel in the 8Be+n model gives an overall good description of the elastic data for all the systems considered. The couplings generated by breakup in 8Be+n model have different behaviour than the coupling effects obtained within the 5He+4He model, the former being more prominent at lower energies and for the heavier target systems. The behaviour of extracted dynamic polarisation potentials (DPP) generated due to breakup and one neutron transfer couplings have been investigated.