Sub-barrier fusion of /sup 58,64/Ni with /sup 64/Ni and /sup 74/Ge

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.837· OSTI ID:5669392

Beckerman, M; Salomaa, M; Sperduto, A; Molitoris, J D; DiRienzo, A

Differential cross sections for evaporation residue formation following complete fusion of /sup 64/Ni and /sup 74/Ge with 171 to 215 MeV /sup 58/Ni and /sup 64/Ni ions were measured with high precision using a velocity selector together with a counter telescope. The resulting excitation functions for complete fusion ranged in magnitude from 10 ..mu..b to 300 mb. The excitation functions exhibited a strong response, at subbarrier energies, to changes in the underlying nuclear structure. We interpreted these variations as evidence that the fusion proceeds through dynamic single-particle/softness-related processes. A phenomenological analysis was performed. In the analysis, we employed the WKB method, constructed a simple interaction potential and introduced a radially-dependent effective mass. The use of the variable effective mass led to a meaningful description of our above-barrier data and to improvements towards describing our subbarrier data.

• Research Organization: Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5669392
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651525* -- Nuclear Properties & Reactions
A=39-58
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651625 -- Nuclear Properties & Reactions
A=59-89
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
COULOMB FIELD
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRIC FIELDS
ENERGY RANGE
EVAPORATION MODEL
EXPERIMENTAL DATA
FUSION REACTIONS
GERMANIUM 74 REACTIONS
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NICKEL 58 REACTIONS
NICKEL 58 TARGET
NICKEL 64 REACTIONS
NICKEL 64 TARGET
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE MODELS
SINGLE-PARTICLE MODEL
TARGETS