2007/08/31 by W. Trautmann, R. Bassini, M. Begemann-Blaich +45 · 1 citation
Engineering · Physics and Astronomy · #Nuclear Physics and Applications #Nuclear physics research studies #Nuclear reactor physics and engineering #nucl-ex
paper · pdf · doi:10.1103/physrevc.76.064606
published as Phys.Rev.C76:064606,2007 · 14 pages, 10 figures, submitted to Phys. Rev. C, small changes as suggested by the editors and referees
arxiv created 2007/12/17 · openalex publication_date 2007/12/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Isotope temperatures from double ratios of hydrogen, helium, lithium, beryllium, and carbon isotopic yields, and excited-state temperatures from yield ratios of particle-unstable resonances in 4He, 5Li, and 8Be, were determined for spectator fragmentation, following collisions of 197Au with targets ranging from C to Au at incident energies of 600 and 1000 MeV per nucleon. A deviation of the isotopic from the excited-state temperatures is observed which coincides with the transition from residue formation to multi-fragment production, suggesting a chemical freeze-out prior to thermal freeze-out in bulk disintegrations.