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

U. Forsberg, D. Rudolph, L. -L. Andersson, A. Di Nitto, Ch E. Düllmann, J. M. Gates, P. Golubev, K. E. Gregorich, C. J. Gross, R. -D. Herzberg, F. P. Hessberger, J. Khuyagbaatar, J. V. Kratz, K. Rykaczewski, L. G. Sarmiento, M. Schädel, A. Yakushev, S. Åberg, D. Ackermann, M. BlockH. Brand, B. G. Carlsson, D. Cox, X. Derkx, J. Dobaczewski, K. Eberhardt, J. Even, C. Fahlander, J. Gerl, E. Jäger, B. Kindler, J. Krier, I. Kojouharov, N. Kurz, B. Lommel, A. Mistry, C. Mokry, W. Nazarewicz, H. Nitsche, J. P. Omtvedt, P. Papadakis, I. Ragnarsson, J. Runke, H. Schaffner, B. Schausten, Y. Shi, P. Thörle-Pospiech, T. Torres, T. Traut, N. Trautmann, A. Türler, A. Ward, D. E. Ward, N. Wiehl

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    53 Citaten (Scopus)
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    Samenvatting

    Products of the fusion-evaporation reaction Ca-48 + Am-243 were studied with the TASISpec set-up at the gas-filled separator TASCA at the GSI Helmholtzzentrum f\"ur Schwerionenforschung. Amongst the detected thirty correlated alpha-decay chains associated with the production of element Z=115, two recoil-alpha-fission and five recoil-alpha-alpha-fission events were observed. The latter are similar to four such events reported from experiments performed at the Dubna gas-filled separator. Contrary to their interpretation, we propose an alternative view, namely to assign eight of these eleven decay chains of recoil-alpha(-alpha)-fission type to start from the 3n-evaporation channel 115-288. The other three decay chains remain viable candidates for the 2n-evaporation channel 115-289.
    Originele taal-2English
    Pagina's (van-tot)117-138
    Aantal pagina's22
    TijdschriftNuclear Physics A
    Volume953
    DOI's
    StatusPublished - 2016

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