Transfer reaction cross sections from the interactions of /sup 20/Ne and /sup 22/Ne with /sup 232/Th
A target of /sup 232/Th has been bombarded with 114 MeV /sup 22/Ne and with 114 MeV and 129 MeV /sup 20/Ne beams. Recoiling reaction products were chemically isolated and the cross sections for protactinium, uranium, and neptunium isotopes were determined. The width of the cross section distributions for a given Z and their neutron-richness are the same as those for similar transfers in Ne+ /sup 248/Cm reactions. Population of low spin isomeric states is favored in these reactions over population of high spin states. As was seen in reactions with heavier targets, an increase in reaction energy does little to shift the evaporation residues toward neutron deficiency. The implications are that only primary products with little or no excitation energy and angular momentum survive the fission process to become evaporation residues in these systems, and that the production of these nuclides is more controlled by the change in the identity of the projectile than by the corresponding change in the target.
- Research Organization:
- Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
- OSTI ID:
- 6298669
- Journal Information:
- Phys. Rev. C; (United States), Vol. 30:3
- Country of Publication:
- United States
- Language:
- English
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INVESTIGATION OF THE NUCLEAR REACTION $sub 90$Th$sup 232$($sub 10$Ne$sup 22$, 4n)$sub 100$Fm$sup 25$$sup 0$
Related Subjects
NEON 20 REACTIONS
TRANSFER REACTIONS
NEON 22 REACTIONS
THORIUM 232 TARGET
ANGULAR MOMENTUM
COULOMB FIELD
CROSS SECTIONS
EVAPORATION MODEL
EXPERIMENTAL DATA
FISSION
MEV RANGE 100-1000
RECOILS
CHARGED-PARTICLE REACTIONS
DATA
DIRECT REACTIONS
ELECTRIC FIELDS
ENERGY RANGE
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
TARGETS
652025* - Nuclear Properties & Reactions
A=220 & above
Experimental- Nuclear Reactions & Scattering- (-1987)