6533b852fe1ef96bd12ab549
RESEARCH PRODUCT
Reactions of40Ar with233U,235U, and238U at the barrier
U. W. SchererK. J. MoodyK. SümmererJ. V. KratzM. SchädelW. BrüchleC. FrinkG. WirthGünter HerrmannNorbert TrautmannHeinz W. GäggelerM. Brüggersubject
Nuclear and High Energy PhysicsIsotopeComponent (thermodynamics)ChemistryAnalytical chemistryNuclear fusionchemistry.chemical_elementAtomic numberIsotopes of californiumActinideAtomic physicsUraniumPotential energydescription
Production cross sections for target-like transfer products in reactions of40Ar with233,235,238U at the barrier were determined using radiochemical techniques. The heaviest products detected are isotopes of californium (Z=98). In addition to the quasi-elastic component of the isotopic distributions observed in the vicinity of uranium, there are also relaxed contributions throughout the entire region. The peak positions of the isotope distributions of this component for fixed atomic number, after the transfer of > 3 charges, approach closely the minimum of the potential energy surfaces (PES). The experimental results thus indicate the cold formation of the reaction products. A search for long-lived heavy actinides produced, by fusion-evaporation, via isotopes of element 110 and their subsequent decay through α-decay chains, remained unsuccessful at a cross section limit of 21 pb.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-12-01 | Zeitschrift f�r Physik A Atomic Nuclei |