Production of heavy actinides from interactions of /sup 16/O, /sup 18/O, /sup 20/Ne, and /sup 22/Ne with /sup 248/Cm

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.286· OSTI ID:5633158

Lee, D; von Gunten, H; Jacak, B; Nurmia, M; Liu, Y; Luo, C; Seaborg, G T; Hoffman, D C

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), Journal Name: Phys. Rev. C; (United States) Vol. 25:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
BERKELIUM ISOTOPES
CALIFORNIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
COULOMB FIELD
CROSS SECTIONS
CURIUM 248 TARGET
DATA
EINSTEINIUM ISOTOPES
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EXPERIMENTAL DATA
FERMIUM ISOTOPES
GAMMA RADIATION
HEAVY ION REACTIONS
INFORMATION
IONIZING RADIATIONS
ISOTOPE PRODUCTION
ISOTOPES
LAWRENCIUM ISOTOPES
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NEON 20 REACTIONS
NEON 22 REACTIONS
NOBELIUM ISOTOPES
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
OXYGEN 18 REACTIONS
RADIATIONS
TARGETS