Fusion reaction Ca+Bk leading to formation of the element Ts (Z=117)

Khuyagbaatar, J.*; Yakushev, A.*; Dllmann, Ch. E.*; Ackermann, D.*; Andersson, L.-L.*; Asai, Masato  ; Block, M.*; Boll, R. A.*; Brand, H.*; Cox, D. M.*; Dasgupta, M.*; Derkx, X.*; Di Nitto, A.*; Eberhardt, K.*; Even, J.*; Evers, M.*; Fahlander, C.*; Forsberg, U.*; Gates, J. M.*; Gharibyan, N.*; Golubev, P.*; Gregorich, K. E.*; Hamilton, J. H.*; Hartmann, W.*; Herzberg, R.-D.*; Heberger, F. P.*; Hinde, D. J.*; Hoffmann, J.*; Hollinger, R.*; Hbner, A.*; Jger, E.*; Kindler, B.*; Kratz, J. V.*; Krier, J.*; Kurz, N.*; Laatiaoui, M.*; Lahiri, S.*; Lang, R.*; Lommel, B.*; Maiti, M.*; Miernik, K.*; Minami, Shizu*; Mistry, A.*; Mokry, C.*; Nitsche, H.*; Omtvedt, J. P.*; Pang, G. K.*; Papadakis, P.*; Renisch, D.*; Roberto, J.*; Rudolph, D.*; Runke, J.*; Rykaczewski, K. P.*; Sarmiento, L. G.*; Schdel, M.*; Schausten, B.*; Semchenkov, A.*; Shaughnessy, D. A.*; Steinegger, P.*; Steiner, J.*; Tereshatov, E. E.*; Thrle-Pospiech, P.*; Tinschert, K.*; Torres De Heidenreich, T.*; Trautmann, N.*; Trler, A.*; Uusitalo, J.*; Ward, D. E.*; Wegrzecki, M.*; Wiehl, N.*; Van Cleve, S. M.*; Yakusheva, V.*

We have performed an experiment to synthesize the element 117 (Ts) with the Ca+Bk fusion reaction. Four -decay chains attributed to the element 117 were observed. Two of them were long decay chains which can be assigned to the one originating from the decay of Ts. The other two were short decay chains which are consistent with the one originating from the decay of Ts. We have compared the present results with the literature data, and found that our present results mostly confirmed the literature data, leading to the firm confirmation of the synthesis of the element 117.