Fusion evaporation-residue cross sections for sup 28 Si+ sup 40 Ca at E ( sup 28 Si)=309, 397, and 452 MeV
Journal Article
·
· Physical Review, C (Nuclear Physics); (United States)
- Department of Physics, University of Richmond, Richmond, Virginia 23173 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States)
- Division of Educational Programs, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, University of Kansas, Lawrence, Kansas 66045 (United States)
- Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Velocity distributions of mass-identified evaporation residues produced in the {sup 28}Si+{sup 40}Ca reaction have been measured at bombarding energies of 309, 397, and 452 MeV using time-of-flight techniques. These distributions were used to identify evaporation residues and to separate the complete-fusion and incomplete-fusion components. Angular distributions and upper limits for the total evaporation-residue and complete-fusion evaporation-residue cross sections were extracted at all three bombarding energies. The complete-fusion evaporation-residue cross sections and the deduced critical angular momenta are compared with earlier measurements and the predictions of existing models. The ratios of the complete-fusion evaporation-residue cross section to the total evaporation-residue cross section, along with those measured for the {sup 28}Si+{sup 12}C and {sup 28}Si+{sup 28}Si systems at the same energies, support the entrance-channel mass-asymmetry dependence of the incomplete-fusion evaporation-residue process reported earlier.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 7034989
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:4; ISSN 0556-2813; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
663450 -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663540* -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ENERGY RANGE
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INCOMPLETE FUSION REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
RESIDUES
SILICON 28 REACTIONS
TARGETS
TIME-OF-FLIGHT METHOD
663540* -- Nuclear Mass Ranges-- A=39-58-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CALCIUM 40 TARGET
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ENERGY RANGE
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INCOMPLETE FUSION REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
RESIDUES
SILICON 28 REACTIONS
TARGETS
TIME-OF-FLIGHT METHOD