Fusion and fission studies for the system /sup 32/S + /sup 239/U
Thesis/Dissertation
·
OSTI ID:5676461
The total fusion cross section has been measured at energies from 0.93 to 1.08 times the s-wave interaction barrier for the system /sup 32/S + /sup 238/U. Measurements were made by detecting coincident fission fragments following full momentum transfer in two position sensitive parallel plate avalanche counters. Fission fragment angular distributions were measured from 90/sup 0/ to 166/sup 0/ in the center of mass for all energies except the lowest where the angular range was 127/sup 0/ to 170/sup 0/. The experimental total fusion cross section was first compared to a one dimensional barrier penetration model which severely underpredicted the data. Then the data were compared to the predictions of coupled channels calculations where the first 2/sup +/ and then higher lying states in /sup 238/U were included. The calculations with only the 2/sup +/ state were able to predict the trend in the data quite well. Inclusion of the higher lying states made no appreciable change in the fusion cross section suggesting that for nuclei which may be characterized as highly rotational, coupling to the lowest lying state may be able to reproduce the measured fusion cross section.
- Research Organization:
- State Univ. of New York, Stony Brook (USA)
- OSTI ID:
- 5676461
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
FISSION FRAGMENTS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
SULFUR 32 REACTIONS
TARGETS
URANIUM 238 TARGET
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
FISSION FRAGMENTS
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
SULFUR 32 REACTIONS
TARGETS
URANIUM 238 TARGET