Fusion cross sections for sup 46,50 Ti+ sup 90 Zr, sup 93 Nb and some systematics of heavy-ion fusion at barrier and subbarrier energies

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.1584· OSTI ID:6901345

Stelson, P H; Kim, H J; Beckerman, M; Shapira, D; Robinson, R L ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (USA)

Measurements of the fusion cross sections in the barrier and subbarrier regions are presented for the four heavy-ion systems {sup 46,50}Ti+{sup 90}Zr,{sup 93}Nb. The measured cross sections varied from 0.04 to 400 mb. The evaporation residues were detected by the use of a velocity filter. Procedures are described for extracting fusion cross sections from such measurements. The observed differences in the subbarrier fusion cross sections for the {sup 90}Zr and {sup 93}Nb nuclei, both of which have small collectivity, have led us to question the view that excursions of the strong nuclear force due to collective motions of the colliding nuclei are the primary enhancement mechanisms for the observed heavy-ion subbarrier fusion cross sections.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6901345
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYONS
BINDING ENERGY
CHARGED-PARTICLE REACTIONS
COLLECTIVE MODEL
COULOMB EXCITATION
CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
FERMIONS
HADRONS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NEUTRONS
NIOBIUM 93
NIOBIUM 93 TARGET
NIOBIUM ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
SPIN
STABLE ISOTOPES
TARGETS
TITANIUM 46 REACTIONS
TITANIUM 50 REACTIONS
VALENCE
YEARS LIVING RADIOISOTOPES
ZIRCONIUM 90
ZIRCONIUM 90 TARGET
ZIRCONIUM ISOTOPES