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Velocity and angular distributions of evaporation residues from /sup 32/S-induced reactions

Journal Article · · Phys. Rev. C; (United States)
; ; ; ; ; ; ; ; ;
Velocity distributions of mass-resolved evaporation residues from reactions of /sup 32/S with /sup 12/C, /sup 24/Mg, /sup 27/Al, /sup 28/Si, and /sup 40/Ca have been measured at bombarding energies of 194, 239, and 278 MeV using time-of-flight techniques. In all cases, the observed shifts in the velocity centroids relative to the values expected for complete fusion are consistent with a previously reported parametrization of a threshold for onset of incomplete fusion. Angular distributions were measured and total cross sections extracted for the /sup 32/S+ /sup 24/Mg system at all three energies. A comparison with existing results for /sup 32/S+ /sup 24/Mg at lower energies, and with other systems leading to the /sup 56/Ni compound nucleus, suggests two different types of compound-nuclear limitations to complete fusion at higher energies.
Research Organization:
Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556
OSTI ID:
6163689
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 36:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
651420 -- Nuclear Properties & Reactions
A=20-38
Experimental
651520 -- Nuclear Properties & Reactions
A=39-58
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALUMINIUM 27 TARGET
ANGULAR DISTRIBUTION
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCIUM 40 TARGET
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
ENERGY RANGE
ENERGY SPECTRA
EVAPORATION MODEL
EVEN-EVEN NUCLEI
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNESIUM 24 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MONTE CARLO METHOD
NICKEL 56
NICKEL ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
RADIOISOTOPES
SILICON 28 TARGET
SPECTRA
SULFUR 32 REACTIONS
TANDEM ELECTROSTATIC ACCELERATORS
TARGETS
TIME-OF-FLIGHT METHOD
TOTAL CROSS SECTIONS