Ca-48+Bk-249 Fusion Reaction Leading to Element Z=117: Long-Lived alpha-Decaying (270)Db and Discovery of Lr-266

Autor: Khuyagbaatar, J, Yakushev, A, Duellmann, Ch E, Ackermann, D, Andersson, L-L, Asai, M, Block, M, Boll, RA, Brand, H, Cox, DM, Dasgupta, M, Derkx, X, Di Nitto, A, Eberhardt, K, Even, J, Evers, M, Fahlander, C, Forsberg, U, Gates, JM, Gharibyan, N, Golubev, P, Gregorich, KE, Hamilton, JH, Hartmann, W, Herzberg, R-D, Hessberger, FP, Hinde, DJ, Hoffmann, J, Hollinger, R, Huebner, A, Jaeger, E, Kindler, B, Kratz, JV, Krier, J, Kurz, N, Laatiaoui, Mustapha, Lahiri, S, Lang, R, Lommel, B, Maiti, M, Miernik, K, Minami, S, Mistry, A, Mokry, C, Nitsche, H, Omtvedt, JP, Pang, GK, Papadakis, P, Renisch, D, Roberto, J, Rudolph, D, Runke, J, Rykaczewski, KP, Sarmiento, LG, Schaedel, M, Schausten, B, Semchenkov, A, Shaughnessy, DA, Steinegger, P, Steiner, J, Tereshatov, EE, Thoerle-Pospiech, P, Tinschert, K, Torres De Heidenreich, T, Trautmann, N, Tuerler, A, Uusitalo, J, Ward, DE, Wegrzecki, M, Wiehl, N, Van Cleve, SM, Yakusheva, V

The superheavy element with atomic number Z=117 was produced as an evaporation residue in the 48Ca+249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-de

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http://urn.fi/URN:NBN:fi:jyu-201408272667

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Study of Quasielastic Barrier Distributions as a Step towards the Synthesis of Superheavy Elements with Hot Fusion Reactions.

Autor: Tanaka T; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan.; Department of Physics, Kyushu University, Fukuoka 819-0395, Japan.; Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University, Canberra, Australian Capital Territory 2601, Australia., Morita K; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan.; Department of Physics, Kyushu University, Fukuoka 819-0395, Japan., Morimoto K; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan., Kaji D; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan., Haba H; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan., Boll RA; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Brewer NT; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Van Cleve S; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Dean DJ; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Ishizawa S; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan.; Graduate School of Science and Engineering, Yamagata University, Yamagata 990-8560, Japan., Ito Y; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan.; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan., Komori Y; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan., Nishio K; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan., Niwase T; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan.; Department of Physics, Kyushu University, Fukuoka 819-0395, Japan., Rasco BC; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Roberto JB; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Rykaczewski KP; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Sakai H; RIKEN Nishina Center for Accelerator-Based Science, Saitama 351-0198, Japan., Stracener DW; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA., Hagino K; Department of Physics, Tohoku University, Sendai 980-8578, Japan.; Research Center for Electron Photon Science, Tohoku University, Sendai 982-0826, Japan.; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.

Publikováno v: Physical review letters [Phys Rev Lett] 2020 Feb 07; Vol. 124 (5), pp. 052502.