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The identification and confirmation of isomeric states in 254Rf and 255Rf through conversion electron detection

Khuyagbaatar, J., Mistry, A. K., Ackermann, D., Andersson, L. L., Block, M., Brand, H., Düllmann, C. E., Even, J., Heßberger, F. P., Hoffmann, J., Hübner, A., Jäger, E., Kindler, B., Krier, J., Kurz, N., Lommel, B., Schausten, B., Steiner, J., Yakushev, A. & Yakusheva, V., Feb-2020, In : Nuclear Physics A. 994, 11 p., 121662.

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  • The identification and confirmation of isomeric states in 254Rf and 255Rf through conversion electron detection

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DOI

  • J. Khuyagbaatar
  • A. K. Mistry
  • D. Ackermann
  • L. L. Andersson
  • M. Block
  • H. Brand
  • Ch E. Düllmann
  • J. Even
  • F. P. Heßberger
  • J. Hoffmann
  • A. Hübner
  • E. Jäger
  • B. Kindler
  • J. Krier
  • N. Kurz
  • B. Lommel
  • B. Schausten
  • J. Steiner
  • A. Yakushev
  • V. Yakusheva

The neutron-deficient isotopes 254,255Rf were produced in the fusion-evaporation reaction 50Ti + 206Pb at the gas-filled recoil separator TASCA. Decay properties of these nuclei were investigated by applying fast digital electronics. A search for isomeric states in both isotopes was performed by using the accompanying conversion electron emissions. Isomeric states with half-lives of 4(1) μs and >30 μs were measured for 254Rf and 255Rf, respectively, which confirm the findings at different separators. The present experimental results demonstrate the great potential of fast digital electronics for measurements of isomeric states in the heaviest nuclei, which are only producible in small quantities.

Original languageEnglish
Article number121662
Number of pages11
JournalNuclear Physics A
Volume994
Publication statusPublished - Feb-2020
Externally publishedYes

    Keywords

  • Conversion electron, Digital fast data acquisition, Fusion-evaporation reaction, Isomeric state, SPONTANEOUS FISSION, NUCLEAR ISOMERS, SEPARATOR, ISOTOPES, TASCA, GSI

ID: 120944382