Direct Determination of Ground-State Transition Widths and Natural Level Widths with the Method of Relative Self Absorption

  • C. Romig
  • , T. Beck
  • , J. Beller
  • , J. Birkhan
  • , A. Endres
  • , M. Fritzsche
  • , U. Gayer
  • , J. Glorius
  • , J. Isaak
  • , L. Mertes
  • , H. Pai
  • , N. Pietralla
  • , P. Ries
  • , D. Savran
  • , M. Scheck
  • , L. Schnorrenberger
  • , K. Sonnabend
  • , V. Werner
  • , M. Zweidinger

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    The method of relative self absorption is based on the technique of nuclear resonance fluorescence measurements. It allows for a model-independent determination of ground-state transition widths, natural level widths, and, consequently, of branching ratios to the ground state for individual excitations. Relative self-absorption experiments have been performed on the nuclei Li-6 and Ce-140. In order to investigate the total level width for the 0(1)(+), T = 1 level at 3563 keV in Li-6, a high-precision self-absorption measurement has been performed. In the case of Ce-140, self absorption has been applied for the first time to study decay widths of dipole-excited states in the energy regime of the pygmy dipole resonance.
    Original languageEnglish
    Title of host publicationCGS15 - CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
    EditorsR Schwengner, K Zuber
    PublisherEDP Sciences
    Volume93
    ISBN (Print)978-2-7598-1794-8
    DOIs
    Publication statusPublished - 2015

    Publication series

    NameEPJ Web of Conferences
    PublisherEDP Sciences
    ISSN (Print)2100-014X

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