Recoil-alpha-fission and recoil-alpha-alpha-fission events observed in the reaction Ca-48+Am-243



Forsberg, U, Rudolph, D, Andersson, L-L, Di Nitto, A, Duellmann, CE, Fahlander, C, Gates, JM, Golubev, P, Gregorich, KE, Gross, CJ
et al (show 44 more authors) (2016) Recoil-alpha-fission and recoil-alpha-alpha-fission events observed in the reaction Ca-48+Am-243. NUCLEAR PHYSICS A, 953. 117 - 138.

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Abstract

Products of the fusion-evaporation reaction 48Ca + 243Am were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany. Amongst the detected thirty correlated α-decay chains associated with the production of element , two recoil-α-fission and five recoil--fission events were observed. The latter five chains are similar to four such events reported from experiments performed at the Dubna gas-filled separator, and three such events reported from an experiment at the Berkeley gas-filled separator. The four chains observed at the Dubna gas-filled separator were assigned to start from the 2n-evaporation channel 289115 due to the fact that these recoil--fission events were observed only at low excitation energies. Contrary to this interpretation, we suggest that some of these recoil--fission decay chains, as well as some of the recoil--fission and recoil-α-fission decay chains reported from Berkeley and in this article, start from the 3n-evaporation channel 288115.

Item Type: Article
Uncontrolled Keywords: Superheavy elements, Element 115, Uup, alpha decay, Spontaneous fission
Depositing User: Symplectic Admin
Date Deposited: 08 Jun 2016 09:36
Last Modified: 27 Nov 2020 10:24
DOI: 10.1016/j.nuclphysa.2016.04.025
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/3001578