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


Forsberg, U, Rudolph, D, Andersson, L-L, Di Nitto, A, Düllmann, Ch E, Fahlander, C, Gates, JM, Golubev, P, Gregorich, KE, Gross, CJ et al (show 44 more authors) (2016) Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am. Nuclear Physics A, 953. pp. 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 Z=115, two recoil-α-fission and five recoil-α-α-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-α-α-fission events were observed only at low excitation energies. Contrary to this interpretation, we suggest that some of these recoil-α-α-fission decay chains, as well as some of the recoil-α-α-fission and recoil-α-fission decay chains reported from Berkeley and in this article, start from the 3n-evaporation channel 288115.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 01 Jul 2016 14:59
Last Modified: 19 Jan 2023 07:35
DOI: 10.1016/j.nuclphysa.2016.04.025
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3001974
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