Formation and decay of [sup 164]Yb[sup *] in near- and below-barrier fusion reactions

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.2895· OSTI ID:5574505

Nicolis, N G; Sarantites, D G ^[1]

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1. Department of Chemistry, Washington University, St. Louis, Missouri 63130 (United States)

A consistent description of the formation and decay of [sup 164]Yb[sup *] in the fusion of [sup 16]O+[sup 148]Sm and [sup 64]Ni+[sup 100]Mo is presented in a bombarding energy range from near to well below the entrance channel Coulomb barrier. Fusion excitation functions and angular momentum distributions are described well with a recently proposed one-dimensional barrier penetration model with energy-dependent fusion barriers. The main features of fusion and angular momentum distribution data in [sup 64]Ni+[sup 100]Mo are also reproduced with simplified coupled channel calculations. The statistical model accounts well for the decay of [sup 164]Yb[sup *] in the [sup 16]O-induced reaction and for most of the data in the [sup 64]Ni-induced reaction. The evaporation residue fractional cross sections as a function of the compound nucleus excitation energy show trends that correlate with the low- and high-spin regions of the compound nucleus angular momentum distributions populated in the two reactions.

• DOE Contract Number: FG02-88ER40406
• OSTI ID: 5574505
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DECAY
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
EXCITATION FUNCTIONS
FUNCTIONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MOLYBDENUM 100 TARGET
NICKEL 64 REACTIONS
NUCLEAR REACTIONS
NUCLEI
OXYGEN 16 REACTIONS
RADIOISOTOPES
RARE EARTH NUCLEI
SAMARIUM 148 TARGET
STATISTICAL MODELS
TARGETS
YTTERBIUM 164
YTTERBIUM ISOTOPES