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

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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) , Herzberg, R-D ORCID: 0000-0001-9876-1518, Hessberger, FP, Khuyagbaatar, J, Kratz, JV, Rykaczewski, K, Sarmiento, LG, Schaedel, M, Yakushev, A, Aberg, S, Ackermann, D, Block, M, Brand, H, Carlsson, BG, Cox, D, Derkx, X, Dobaczewski, J, Eberhardt, K, Even, J, Gerl, J, Jaeger, E, Kindler, B, Krier, J, Kojouharov, I, Kurz, N, Lommel, B, Mistry, A, Mokry, C, Nazarewicz, W, Nitsche, H, Omtvedt, JP, Papadakis, P ORCID: 0000-0001-7509-4257, Ragnarsson, I, Runke, J, Schaffner, H, Schausten, B, Shi, Y, Thoerle-Pospiech, P, Torres, T, Traut, T, Trautmann, N, Tuerler, A, Ward, A, Ward, DE and Wiehl, N (2016) Recoil-alpha-fission and recoil-alpha-alpha-fission events observed in the reaction Ca-48+Am-243. 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 , 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
Additional Information:	15 pages. Article: 9 pages, 3 tables, 3 figures. Supplemental material: 6 pages, 7 tables, 1 figure. Submitted to PRC
Uncontrolled Keywords:	Superheavy elements, Element 115, Uup, alpha decay, Spontaneous fission
Depositing User:	Symplectic Admin
Date Deposited:	08 Jun 2016 09:36
Last Modified:	15 Mar 2024 07:35
DOI:	10.1016/j.nuclphysa.2016.04.025
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3001578