Systematic analysis of average angular momenta and cross sections in sub-barrier fusion

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.43.265· OSTI ID:6040335

DiGregorio, D E; Stokstad, R G ^[1]

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1. Nuclear Science Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (US)

Average angular momenta deduced from isomer ratio, gamma-multiplicity, and fission fragment angular anisotropy measurements, and the associated cross sections for fourteen systems are analyzed with a barrier penetration model that includes the coupling of inelastic channels. Good agreement was found between the theory and the data obtained from isomer ratio and from gamma-ray multiplicity measurements with the exception of the more symmetric systems. In these cases the discrepancies with theory show correlations in cross section and angular momentum suggesting that a valid model can be found. The measurements of angular momentum using the fission fragment anisotropy technique, however, do not appear reconcilable with the energy dependence of the cross sections. This systematic overview suggests that the origin of this discrepancy lies with the deduction of angular momentum from the measured anisotropy in inclusive fission fragment angular distributions.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6040335
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:1; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
653006 -- Nuclear Theory-- Spontaneous & Induced Fission
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
C CODES
COMPUTER CODES
CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY DEPENDENCE
EXCITATION FUNCTIONS
FISSION FRAGMENTS
FUNCTIONS
GAMMA RADIATION
HEAVY ION FUSION REACTIONS
INCLUSIVE INTERACTIONS
INELASTIC SCATTERING
INTERACTIONS
IONIZING RADIATIONS
MULTIPLICITY
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
RADIATIONS
SCATTERING
SPIN