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Claes Fahlander

Professor emeritus

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Spectroscopy along flerovium decay chains. III. Details on experiment, analysis, 282Cn, and spontaneous fission branches

Author

  • A. Såmark-Roth
  • D. M. Cox
  • D. Rudolph
  • L. G. Sarmiento
  • M. Albertsson
  • B. G. Carlsson
  • J. L. Egido
  • P. Golubev
  • J. Heery
  • A. Yakushev
  • S. Åberg
  • H. M. Albers
  • M. Block
  • H. Brand
  • T. Calverley
  • R. Cantemir
  • R. M. Clark
  • Ch. E. Düllmann
  • J. Eberth
  • C. Fahlander
  • U. Forsberg
  • J. M. Gates
  • F. Giacoppo
  • M. Götz
  • S. Götz
  • R.-D. Herzberg
  • Y. Hrabar
  • E. Jäger
  • D. Judson
  • J. Khuyagbaatar
  • B. Kindler
  • I. Kojouharov
  • J. V. Kratz
  • J. Krier
  • N. Kurz
  • L. Lens
  • J. Ljungberg
  • B. Lommel
  • J. Louko
  • C.-C. Meyer
  • A. Mistry
  • C. Mokry
  • P. Papadakis
  • E. Parr
  • J. L. Pore
  • I. Ragnarsson
  • J. Runke
  • M. Schädel
  • H. Schaffner
  • B. Schausten
  • D. A. Shaughnessy
  • P. Thörle-Pospiech
  • N. Trautmann
  • J. Uusitalo
Show all

Summary, in English

Flerovium isotopes (element Z = 114) were produced in the fusion-evaporation reactions 48Ca+242,244Pu and studied with an upgraded TASISpec decay station placed in the focal plane of the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. Twenty-nine flerovium decay chains were identified by means of correlated implantation, α decay, and spontaneous fission events. Data analysis aspects and statistical assessments, primarily based on measured rates of various events, which laid the foundation for the comprehensive spectroscopic information on the flerovium decay chains, are presented in detail. Various decay scenarios of an excited state observed in 282Cn are examined in depth with the help of GEANT4 simulations and assessed by predictions of beyond mean-field calculations including triaxial shape degrees of freedom. Previous, revised, and newly derived fission probabilities of even-even superheavy nuclei are compared with various theoretical predictions.

Department/s

  • Nuclear physics
  • Mathematical Physics

Publishing year

2023-02-06

Language

English

Publication/Series

Physical Review C

Volume

107

Issue

2

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • Superheavy elements
  • Nuclear spectroscopy
  • Alpha decay
  • Spontaneous fission
  • E0 decay
  • Mean field theory

Status

Published

Project

  • Characterization of New Superheavy Elements
  • Nuclear Structure at the Limits: Isotope-selective Spectroscopy
  • Spectroscopy along Decay Chains of Element 114, Flerovium

ISBN/ISSN/Other

  • ISSN: 2469-9985