Spectroscopy of element 115 decay chains

Rudolph, D.; Forsberg, U.; Golubev, P.; Düllmann, Ch E.; Sarmiento, L. G.; Yakushev, A.; Andersson, L.-L.; Di Nitto, Antonio; Düllmann, C.-H. E.; Gates, J. M.; Gregorich, K. E.; Gross, C. J.; Heßberger, Fritz-Peter; Herzberg, R.-D.; Khuyagbaatar, J.; Kratz, Jens Volker; Rykaczewski, K.; Schädel, M.; Åberg, S.; Ackermann, D.; Aberg, S.; Block, M.; Brand, H.; Düllmann, Christoph-H. E.; Carlsson, B. G.; Cox, D.; Derkx, Xavier; Eberhardt, Klaus; Even, J.; Fahlander, C.; Gerl, J.; Jäger, E.; Kindler, B.; Krier, J.; Kojouharov, I.; Kurz, N.; Lommel, B.; Mistry, A.; Mokry, Christoph; Nitsche, H.; Omtvedt, J. P.; Papadakis, P.; Ragnarsson, I.; Runke, J.; Schaffner, H.; Schausten, B.; Thörle Pospiech, Petra; Torres, T.; Traut, T.; Trautmann, Norbert; Türler, A.; Ward, A.; Ward, D. E.; Wiehl, Norbert

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American Physical Society, Physical Review Letters, 11(111), 2013

DOI: 10.1103/physrevlett.111.112502

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Spectroscopy of element 115 decay chains

Journal article published in 2013 by D. Rudolph, U. Forsberg, P. Golubev, Ch E. Düllmann, L. G. Sarmiento, A. Yakushev, L.-L. Andersson, Antonio Di Nitto, C.-H. E. Düllmann

, J. M. Gates, K. E. Gregorich, C. J. Gross, Fritz-Peter Heßberger, R.-D. Herzberg, J. Khuyagbaatar and other authors.

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Abstract

A high-resolution α, x-ray, and γ-ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung. Thirty correlated α-decay chains were detected following the fusion-evaporation reaction ^{48}Ca+^{243}Am. The observations are consistent with previous assignments of similar decay chains to originate from element Z=115. For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z>112. Comprehensive Monte Carlo simulations accompany the data analysis. Nuclear structure models provide a first level interpretation.

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Spectroscopy of element 115 decay chains

Abstract