Actinide production from xenon bombardments of curium-248
Production cross sections for many actinide nuclides formed in the reaction of /sup 129/Xe and /sup 132/Xe with /sup 248/Cm at bombarding energies slightly above the coulomb barrier were determined using radiochemical techniques to isolate these products. These results are compared with cross sections from a /sup 136/Xe + /sup 248/Cm reaction at a similar energy. When compared to the reaction with /sup 136/Xe, the maxima in the production cross section distributions from the more neutron deficient projectiles are shifted to smaller mass numbers, and the total cross section increases for the production of elements with atomic numbers greater than that of the target, and decreases for lighter elements. These results can be explained by use of a potential energy surface (PES) which illustrates the effect of the available energy on the transfer of nucleons and describes the evolution of the di-nuclear complex, an essential feature of deep-inelastic reactions (DIR), during the interaction. The other principal reaction mechanism is the quasi-elastic transfer (QE). Analysis of data from a similar set of reactions, /sup 129/Xe, /sup 132/Xe, and /sup 136/Xe with /sup 197/Au, aids in explaining the features of the Xe + Cm product distributions, which are additionally affected by the depletion of actinide product yields due to deexcitation by fission. The PES is shown to be a useful tool to predict the general features of product distributions from heavy ion reactions.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6042673
- Report Number(s):
- LBL-19010; ON: DE85007768
- Country of Publication:
- United States
- Language:
- English
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Dependence of actinide production on the mass number of the projectile: Xe +/sup 248/Cm
Actinide production in /sup 136/Xe bombardments of /sup 249/Cf
Related Subjects
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
AMERICIUM ISOTOPES
BERKELIUM ISOTOPES
CALIFORNIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
CURIUM 248 TARGET
CURIUM ISOTOPES
DATA
DEEP INELASTIC HEAVY ION REACTIONS
DIRECT REACTIONS
EINSTEINIUM ISOTOPES
EXPERIMENTAL DATA
FERMIUM ISOTOPES
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
ISOTOPE PRODUCTION
ISOTOPES
NEPTUNIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PLUTONIUM ISOTOPES
QUASI-FREE REACTIONS
SEPARATION PROCESSES
TARGETS
TRANSFER REACTIONS
XENON 129 REACTIONS
XENON 132 REACTIONS