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Selected spectroscopic results on element 115 decay chains

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Abstract

Thirty correlated α-decay chains were observed in an experiment studying the fusion-evaporation reaction 48Ca + 243Am at the GSI Helmholtzzentrum für Schwerionenforschung. The decay characteristics of the majority of these 30 chains are consistent with previous observations and interpretations of such chains to originate from isotopes of element Z = 115. High-resolution α-photon coincidence spectroscopy in conjunction with comprehensive Monte-Carlo simulations allow to propose excitation schemes of atomic nuclei of the heaviest elements, thereby probing nuclear structure models near the ‘Island of Stability’ with unprecedented experimental precision.

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Acknowledgments

The authors would like to thank the ion-source and accelerator staff at GSI. This work is supported by the European Community FP7—Capacities ENSAR No. 262010, the Royal Physiographic Society in Lund, the Euroball Owners Committee, the Swedish Research Council, the German BMBF, the Office of Nuclear Physics, U.S. Department of Energy, and the UK Science and Technology Facilities Council.

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Authors and Affiliations

  1. Lund University, 22100, Lund, Sweden

    D. Rudolph, U. Forsberg, P. Golubev, L. G. Sarmiento, S. Åberg, B. G. Carlsson, C. Fahlander, I. Ragnarsson & D. E. Ward

  2. GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291, Darmstadt, Germany

    A. Yakushev, Ch. E. Düllmann, F. P. Heßberger, M. Schädel, D. Ackermann, M. Block, H. Brand, J. Gerl, E. Jäger, B. Kindler, J. Krier, I. Kojouharov, N. Kurz, B. Lommel, J. Runke, H. Schaffner, B. Schausten & T. Torres

  3. Helmholtz Institute Mainz, 55099, Mainz, Germany

    L.-L. Andersson, Ch. E. Düllmann, F. P. Heßberger, J. Khuyagbaatar, X. Derkx, K. Eberhardt, J. Even, C. Mokry, P. Thörle-Pospiech & N. Wiehl

  4. Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany

    A. Di Nitto, Ch. E. Düllmann, J. V. Kratz, X. Derkx, K. Eberhardt, C. Mokry, P. Thörle-Pospiech, T. Traut, N. Trautmann & N. Wiehl

  5. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA

    J. M. Gates, K. E. Gregorich & H. Nitsche

  6. Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA

    C. J. Gross & K. Rykaczewski

  7. University of Liverpool, Liverpool, L69 7ZE, UK

    R.-D. Herzberg, D. Cox, A. Mistry, P. Papadakis & A. Ward

  8. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Japan

    M. Schädel

  9. University of Oslo, 0315, Oslo, Norway

    J. P. Omtvedt

  10. Paul Scherrer Institute and University of Bern, 5232, Villigen, Switzerland

    A. Türler

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Correspondence to D. Rudolph.

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Rudolph, D., Forsberg, U., Golubev, P. et al. Selected spectroscopic results on element 115 decay chains. J Radioanal Nucl Chem 303, 1185–1190 (2015). https://doi.org/10.1007/s10967-014-3445-y

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