Production of heavy actinides from interactions of /sup 16/O, /sup 18/O, /sup 20/Ne, and /sup 22/Ne with /sup 248/Cm
We have measured cross sections for the production of isotopes of Bk through No in bombardments of /sup 248/Cm with /sup 16/O, /sup 18/O, /sup 20/Ne, and /sup 22/Ne ions at energies near the Coulomb barrier. In general, the peak of the mass-yield curve for each element is about two mass units larger for /sup 18/O and /sup 22/Ne than for /sup 16/O and /sup 20/Ne, reflecting the neutron excess of the projectiles. The production cross sections and maxima of the actinide isotopic distributions are at least as favorable for production of neutron-rich actinides as those measured for irradiation of /sup 238/U and /sup 248/Cm with very heavy ions. The observation of so many neutron-rich products between the masses of the target and compound nucleus suggests a direct transfer reaction in which the product nuclide is formed with relatively low excitation which minimizes depletion from prompt fission.
- Research Organization:
- Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
- OSTI ID:
- 5633158
- Journal Information:
- Phys. Rev. C; (United States), Vol. 25:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BERKELIUM ISOTOPES
ISOTOPE PRODUCTION
CALIFORNIUM ISOTOPES
CURIUM 248 TARGET
NEON 20 REACTIONS
NEON 22 REACTIONS
OXYGEN 16 REACTIONS
OXYGEN 18 REACTIONS
EINSTEINIUM ISOTOPES
FERMIUM ISOTOPES
LAWRENCIUM ISOTOPES
COMPOUND-NUCLEUS REACTIONS
NOBELIUM ISOTOPES
COULOMB FIELD
CROSS SECTIONS
EXPERIMENTAL DATA
GAMMA RADIATION
MEV RANGE 10-100
MEV RANGE 100-1000
ACTINIDE ISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ENERGY RANGE
HEAVY ION REACTIONS
INFORMATION
IONIZING RADIATIONS
ISOTOPES
MEV RANGE
NUCLEAR REACTIONS
NUMERICAL DATA
RADIATIONS
TARGETS
652025* - Nuclear Properties & Reactions
A=220 & above
Experimental- Nuclear Reactions & Scattering- (-1987)