Heavy Residue Formation in 20 MeV/nucleon 197Au + 90Zr collisions

Abstract

The yields and velocity distributions of heavy residues and fission fragments from the reaction of 20 MeV/nucleon 197Au + 90Zr have been measured using the MSU A1200 fragment separator. A bimodal distribution of residues is observed, with one group, resulting from peripheral collisions, having fragment mass numbers A=160-200, while the other group, resulting from ``hard'' collisions, has A=120-160. This latter group of residues can be distinguished from fission fragments by their lower velocities. A model combining deep-inelastic transfer and incomplete fusion for the primary interaction stage and a statistical evaporation code for the deexcitation stage has been used to describe the properties of the product distributions.

19 pages, 6 figures, preprint submitted to Nucl. Phys. A

References in corpus (1)

• Production mechanism of hot nuclei in violent collisions in the Fermi energy domain

Cited by in corpus (3)

• Isotopic Scaling of Heavy Projectile Residues from the collisions of 25 MeV/nucleon 86Kr with 124Sn, 112Sn and 64Ni, 58Ni
• Heavy Residues with A<90 in the Asymmetric Reaction of 20 AMeV 124Sn+27Al as a Sensitive Probe of the Onset of Multifragmentation
• Neutron-rich rare isotope production from projectile fission of heavy beams in the energy range of 20 MeV/nucleon