Time scale of quasifission from giant dipole resonance [gamma]-ray yield

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.2218· OSTI ID:6585614

Nestler, J; Back, B B; Drese, K S; Hofman, D J; Schadmand, S; Varma, R; Paul, P ^[1]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)

Giant dipole resonance (GDR) [gamma] rays were measured in coincidence with reaction fragments in [sup 58]Ni+[sup 165]Ho at 368 MeV where deep inelastic scattering and quasifission dominate the reaction. The [gamma] spectrum associated with deep inelastic scattering events is well fitted by statistical cooling of projectile and target-like fragments with close to equal initial energy sharing. The [gamma] spectrum associated with quasifission events is well described by statistical emission from the fission fragments alone, with only weak evidence for GDR emission from the mononucleus. A 1[sigma] limit of [tau][le]11[times]10[sup [minus]21] s is obtained for the mononucleus lifetime which is consistent with the lifetimes obtained from quasifission fragment angular distributions.

• DOE Contract Number: FG02-93ER40780
• OSTI ID: 6585614
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COUNTING TECHNIQUES
DEEP INELASTIC SCATTERING
DIPOLES
DISTRIBUTION
ELECTROMAGNETIC RADIATION
FISSION
GAMMA RADIATION
GAMMA SPECTRA
GIANT RESONANCE
HEAVY ION REACTIONS
HOLMIUM 165 TARGET
INELASTIC SCATTERING
INTERACTIONS
IONIZING RADIATIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LIFETIME
MULTIPOLES
NICKEL 58 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
RADIATIONS
RESONANCE
SCATTERING
SPECTRA
TARGETS