Influence of dissipation of the population and decay of compound nuclei

Conference · Thu Dec 31 04:00:00 UTC 1992

OSTI ID:10145563

Thoennessen, M ^[1]; Beene, J R ^[2]

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1. Michigan State Univ., East Lansing, MI (United States)
2. Oak Ridge National Lab., TN (United States)

The importance of nuclear dissipative effects in the formation and decay of compound nuclei is investigated with the {gamma}-ray decay of the giant dipole resonance built on highly excited states. These studies show evidence for long formation times ({approximately} 10{sup {minus}20}s) in heavy, almost symmetric systems. Enhanced {gamma}-ray emission is observed in the decay of fissile nuclei because of the dynamical hindrance of fission. This effect allows the study of hot nuclei prior to fission and it also influences the spin distribution leading to evaporation residues.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10145563
• Report Number(s): CONF-9210249--10; ON: DE93009668; CNN: Grant: PHY-89-13815
• Country of Publication: United States
• Language: English

Related Subjects

663220
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
COMPOUND NUCLEI
CROSS SECTIONS
ELECTROMAGNETIC TRANSITIONS
FISSION
GAMMA DECAY
GAMMA SPECTRA
GIANT RESONANCE
HEAVY ION REACTIONS
NUCLEAR DEFORMATION
SPIN