6533b830fe1ef96bd129656f
RESEARCH PRODUCT
Excitation functions for production of heavy actinides from interactions ofCa40andCa48ions withCm248
Kenneth E. GregorichG. WirthNorbert TrautmannVon Gunten HrW.r. DanielsMoody KjMalcolm M. FowlerHeinz W. GäggelerDarleane C. HoffmanM. BrüggerDiana LeeM. LerchGünter HerrmannGlenn T. SeaborgTh. BlaichJ. V. KratzK. SümmererN. HildebrandR WelchW. BrüchleMatthias Schädelsubject
Nuclear reactionPhysicsNuclear and High Energy PhysicsIsotopeMass spectrumAnalytical chemistryCoulomb barrierActinideNuclear ExperimentSpectral lineExcitationIondescription
Excitation functions have been measured for production of isotopes of Bk through Fm in bombardments of /sup 248/Cm with 234- to 294-MeV /sup 40/Ca ions and with 239- to 318-MeV /sup 48/Ca ions. The maxima of the isotopic distributions for these elements occur at only 2 to 3 mass numbers larger for /sup 48/Ca than for /sup 40/Ca reactions. The shapes of the distributions and the half-widths of about 2.5 mass numbers are quite similar to those observed previously for reactions of /sup 16/O, /sup 18/O, /sup 20/Ne, and /sup 22/Ne with /sup 248/Cm. In general, the excitation functions for /sup 40/Ca show maxima near the Coulomb barrier while those for /sup 48/Ca are about 20 MeV above the barrier. The cross sections decrease rather slowly with increasing projectile energy over the energy range studied, indicating that the additional projectile energy is not manifested as excitation energy of these actinide products.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1985-05-01 | Physical Review C |