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Claes Fahlander

Professor emeritus

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Fusion reaction 48Ca + 249Bk leading to formation of the element Ts (Z=117)

Author

  • J. Khuyagbaatar
  • A. Yakushev
  • Ch E. Düllmann
  • D. Ackermann
  • L. L. Andersson
  • M. Asai
  • M. Block
  • R. A. Boll
  • H. Brand
  • D. M. Cox
  • M. Dasgupta
  • X. Derkx
  • A. Di Nitto
  • K. Eberhardt
  • J. Even
  • M. Evers
  • C. Fahlander
  • U. Forsberg
  • J. M. Gates
  • N. Gharibyan
  • P. Golubev
  • K. E. Gregorich
  • J. H. Hamilton
  • W. Hartmann
  • R. D. Herzberg
  • F. P. Heßberger
  • D. J. Hinde
  • J. Hoffmann
  • R. Hollinger
  • A. Hübner
  • E. Jäger
  • B. Kindler
  • J. V. Kratz
  • J. Krier
  • N. Kurz
  • M. Laatiaoui
  • S. Lahiri
  • R. Lang
  • B. Lommel
  • M. Maiti
  • K. Miernik
  • S. Minami
  • A. Mistry
  • C. Mokry
  • H. Nitsche
  • J. P. Omtvedt
  • G. K. Pang
  • P. Papadakis
  • D. Renisch
  • J. Roberto
  • D. Rudolph
  • J. Runke
  • K. P. Rykaczewski
  • L. G. Sarmiento
  • M. Schädel
  • B. Schausten
  • A. Semchenkov
  • D. A. Shaughnessy
  • P. Steinegger
  • J. Steiner
  • E. E. Tereshatov
  • P. Thörle-Pospiech
  • K. Tinschert
  • T. Torres De Heidenreich
  • N. Trautmann
  • A. Türler
  • J. Uusitalo
  • D. E. Ward
  • M. Wegrzecki
  • N. Wiehl
  • S. M. Van Cleve
  • V. Yakusheva

Summary, in English

The heaviest currently known nuclei, which have up to 118 protons, have been produced in 48Ca induced reactions with actinide targets. Among them, the element tennessine (Ts), which has 117 protons, has been synthesized by fusing 48Ca with the radioactive target 249Bk, which has a half-life of 327 d. The experiment was performed at the gas-filled recoil separator TASCA. Two long and two short α decay chains were observed. The long chains were attributed to the decay of 294Ts. The possible origin of the short-decay chains is discussed in comparison with the known experimental data. They are found to fit with the decay chain patterns attributed to 293Ts. The present experimental results confirm the previous findings at the Dubna Gas-Filled Recoil Separator on the decay chains originating from the nuclei assigned to Ts.

Department/s

  • Nuclear physics
  • Mathematical Physics

Publishing year

2019-05-07

Language

English

Publication/Series

Physical Review C

Volume

99

Issue

5

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • superheavy elements
  • element 117 (Ts)
  • alpha decay
  • gas-filled separator

Status

Published

Project

  • Characterization of New Superheavy Elements
  • Nuclear Structure at the Limits: Isotope-selective Spectroscopy

ISBN/ISSN/Other

  • ISSN: 2469-9985