Heavy residue formation in 20 MeV/nucleon 197Au+90Zr collisions

✍ Scribed by G.A. Souliotis; W. Loveland; K. Hanold; G.J. Wozniak; D.J. Morrissey

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 293 KB
• Volume: 705
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(02)00673-5

✦ Synopsis

The yields and velocity distributions of heavy residues and fission fragments from the reaction of 20 MeV/nucleon 197 Au + 90 Zr 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. These "hard" collision residues can be distinguished from fission fragments by their 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.