Observation of a saturation in the time scale for multifragment emission in symmetric heavy-ion collisions

Journal Article · Mon Jun 14 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.3705· OSTI ID:6382182

Bauge, E; Elmaani, A; Lacey, R A; Lauret, J; Ajitanand, N N; Craig, D; Cronqvist, M; Gualtieri, E; Hannuschke, S; Li, T; Llope, B; Reposeur, T; Vander Molen, A; Westfall, G D; Winfield, J S; Yee, J; Yennello, S; Nadasen, A; Tickle, R S; Norbeck, E ^[1]

---

1. Department of Chemistry; State University of New York at Stony Brook; Stony Brook; New York 11794-3400 (United States) National Superconducting Cyclotron Laboratory Department of Physics; Michigan State University; East Lansing; Michigan 48824-1321 (United States) Department of Physics; University of Michigan at Dearborn; Dearborn; Michigan 48128 (United States) Department of Physics; University of Michigan; Ann Arbor; Michigan 48109-1120 (United States) Department of Physics; University of Iowa; Iowa City; Iowa 52242 (United States) Institut des Science Nucleaires de Grenoble; 53 avenue des Martyrs; 38026 Grenoble CEDEX (France)

We have measured two-fragment reduced-velocity correlation functions of the intermediate mass fragments (IMF: 3[le][ital Z][le]7) produced in multifragment final states for the Kr+Nb system ([ital E]/[ital A]=35, 45, 55, 65, and 75 MeV). From the measured correlation functions we extract mean IMF emission lifetimes ([tau]) which are observed to decrease from [tau][approx]400 fm/[ital c] at [ital E]/[ital A]=35 MeV to [tau][approx]125 fm/[ital c] at [ital E]/[ital A]=55 MeV. For beam energies in excess of [ital E]/[ital A]=55 MeV, no further decrease in [tau] is observed, indicating a possible saturation of the mean emission lifetime for IMF produced in multifragment exit channels.

• OSTI ID: 6382182
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:24; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
CORRELATION FUNCTIONS
EMISSION
ENERGY RANGE
FUNCTIONS
HEAVY ION REACTIONS
KRYPTON 84 REACTIONS
LIFETIME
MEV RANGE
MEV RANGE 10-100
NIOBIUM 93 TARGET
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
SATURATION
TARGETS
VELOCITY