ISSN:
1434-601X
Keywords:
PACS:21.10.Dr Binding energies, masses and excitation energy – 23.60.+e α-decay – 25.70.-z Heavy ion induced reactions and scattering – 25.85.Ca Spontaneous fission – 27.90.+b 220 ≤ A
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The reaction 48Ca+238U was investigated at the recoil separator VASSILISSA at the Flerov Laboratory of Nuclear Reactions, JINR Dubna, in attempts to synthesize new isotopes of element 112. The experiments were performed at two beam energies resulting in excitation energies of the compound nucleus of 33 and 39 MeV. The collected beam dose was 3.5 × 1018 and 2.2 × 1018, respectively. Two spontaneous fission events were observed at the lower beam energy, which tentatively were assigned to the new neutron rich isotope 283112 produced in the reaction 238U(48Ca,3n)283112. The measured cross-section is (5.0+6.3 −3.2) pb and the half–life is (81+147 −32) s. No event was observed at the higher beam energy resulting in the upper cross–section limit of 7.3 pb.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100500050257
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