Spectroscopy of Element 115 Decay Chains

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

doi:10.1103/physrevlett.111.112502

Spectroscopy of Element 115 Decay Chains

D. Rudolph(Lund University), U. Forsberg(Lund University), P. Golubev(Lund University), L. G. Sarmiento(Lund University), A. Yakushev(GSI Helmholtz Centre for Heavy Ion Research), L.-L. Andersson(Helmholtz Institute Mainz), A. Di Nitto(Johannes Gutenberg University Mainz), Ch. E. Düllmann(Johannes Gutenberg University Mainz), J. M. Gates(Lawrence Berkeley National Laboratory), Κ. Ε. Gregorich(Lawrence Berkeley National Laboratory), C. J. Gross(Oak Ridge National Laboratory), F. P. Heßberger(Helmholtz Institute Mainz), R-D Herzberg(University of Liverpool), J. Khuyagbaatar(Johannes Gutenberg University Mainz), Jens Volker Kratz(Johannes Gutenberg University Mainz), K. Rykaczewski(Oak Ridge National Laboratory), M. Schädel(GSI Helmholtz Centre for Heavy Ion Research), S. Åberg(Lund University), D. Ackermann(GSI Helmholtz Centre for Heavy Ion Research), M. Block(GSI Helmholtz Centre for Heavy Ion Research), H.S. Brand(GSI Helmholtz Centre for Heavy Ion Research), B. G. Carlsson(Lund University), D. M. Cox(University of Liverpool), X. Derkx(Helmholtz Institute Mainz), Κ. Eberhardt(Helmholtz Institute Mainz), J. Even(Helmholtz Institute Mainz), C. Fahlander(Lund University), J. Gerl(GSI Helmholtz Centre for Heavy Ion Research), E. Jäger(GSI Helmholtz Centre for Heavy Ion Research), B. Kindler(GSI Helmholtz Centre for Heavy Ion Research), J. Krier(GSI Helmholtz Centre for Heavy Ion Research), I. Kojouharov(GSI Helmholtz Centre for Heavy Ion Research), N. Kurz(GSI Helmholtz Centre for Heavy Ion Research), B. Lommel(GSI Helmholtz Centre for Heavy Ion Research), A. Mistry(University of Liverpool), C. Mokry(Helmholtz Institute Mainz), H. Nitsche(Lawrence Berkeley National Laboratory), J. P. Omtvedt(University of Oslo), P. Papadakis(University of Liverpool), I. Ragnarsson(Lund University), J. Runke(GSI Helmholtz Centre for Heavy Ion Research), H. Schaffner(GSI Helmholtz Centre for Heavy Ion Research), Β. Schausten(GSI Helmholtz Centre for Heavy Ion Research), P. Thörle-Pospiech(Helmholtz Institute Mainz), Tomás Torres⊗(GSI Helmholtz Centre for Heavy Ion Research), T. Traut(Johannes Gutenberg University Mainz), Ν. Trautmann(Johannes Gutenberg University Mainz), Α. Türler(Paul Scherrer Institute), A. Ward(University of Liverpool), D. Ward(Lund University), N. Wiehl(Helmholtz Institute Mainz)

Physical Review Letters

September 10, 2013

10.1103/physrevlett.111.112502

Cited by 157Open Access

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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 48Ca + 243Am. 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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