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Claes Fahlander

Professor emeritus

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Search for proton emission of the isomeric 10+ state in 54Ni

Author

  • K. Stahl
  • A. Wendt
  • P. Reiter
  • D. Rudolph
  • A. Blazhev
  • B. Bruyneel
  • J. Eberth
  • C. Fahlander
  • C. Fransen
  • P. Golubev
  • H. Hess
  • R. Hoischen
  • A. Holler
  • M. Kalkühler
  • T. Kotthaus
  • D. Lersch
  • G. Pascovici
  • M. Seidlitz
  • B. Siebeck
  • J. Taprogge
  • N. Warr
  • A. Wiens
  • O. Zell
Show all

Summary, in English

Several experiments were conducted at the 10 MV Van-de-Graaff tandem accelerator at the Institute of Nuclear Physics, Cologne, to detect proton emission from the isomeric 6457-keV 10+ state in 54Ni. Excitation functions for two fusion–evaporation reactions were measured to maximise the population of the rare two-neutron evaporation channel from a 56Ni compound nucleus. The search for delayed proton emission was based on the 28Si(28Si,2n)54Ni reaction at a beam energy of 70 MeV. For this reaction, a cross-section limit for the population of the 10+ state in 54Ni and its proton-decay branch was determined to be σ< 22 nb.

Department/s

  • Nuclear physics

Publishing year

2020-01-24

Language

English

Publication/Series

European Physical Journal A

Volume

56

Issue

1

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • nuclear structure
  • proton emission

Status

Published

Project

  • Nuclear Structure at the Limits: Isotope-selective Spectroscopy

ISBN/ISSN/Other

  • ISSN: 1434-6001