Dissipative reactions with intermediate-energy beams -- a novel approach to populate complex-structure states in rare isotopes
Abstract
A novel pathway for the formation of multi-particle-multi-hole (np-mh) excited states in rare isotopes is reported from highly energy- and momentum-dissipative inelastic-scattering events measured in reactions of an intermediate-energy beam of 38Ca on a Be target. The negative-parity,complex-structure final states in 38Ca were observed following the in-beam gamma-ray spectroscopy of events in the 9Be(38Ca,38Ca+gamma)X reaction in which the scattered projectile lost longitudinal momentum of order p = 700 MeV/c. The characteristics of the observed final states are discussed and found to be consistent with the formation of excited states involving the rearrangement of multiple nucleons in a single, highly-energetic projectile-target collision. Unlike the far-less dissipative, surface-grazing reactions usually exploited for the in-beam gamma-ray spectroscopy of rare isotopes, these more energetic collisions appear to offer a practical pathway to nuclear-structure studies of more complex multi-particle configurations in rare isotopes - final states conventionally thought to be out of reach with high-luminosity fast-beam-induced reactions.
Keywords
Cite
@article{arxiv.2211.16781,
title = {Dissipative reactions with intermediate-energy beams -- a novel approach to populate complex-structure states in rare isotopes},
author = {A. Gade and B. A. Brown and D. Weisshaar and D. Bazin and K. W. Brown and R. J. Charity and P. Farris and A. M. Hill and J. Li and B. Longfellow and D. Rhodes and W. Reviol and J. A. Tostevin},
journal= {arXiv preprint arXiv:2211.16781},
year = {2022}
}
Comments
Accepted in Phys Rev Lett. arXiv admin note: text overlap with arXiv:2210.01106