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High-spin states in206Bi populated in the205Tl(α, 3n) reaction

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Using alpha-particles in the energy range 35–51MeV and in-beam gamma ray and conversion electron spectroscopy techniques the reaction205Tl(α, 3n)206Bi was studied. A 15±1ns isomeric 15+ state was found at an excitation energy of 3147keV in206Bi. The main configuration of the isomeric state is suggested to beπh 9/2 vp 2/−11 i 2/−213 . The isomeric state decays mainly through a stretched cascade of five gamma rays to the previously known 0.88ms 10− state of theπh 9/2 vi 2/−113 (j −2)0+ configuration at an excitation energy of 1045 keV. A shell model calculation of the yrast states has been performed and it is found that the calculation agrees fairly well with the experiments. The average deviation between experimental and calculated energies for the yrast states with angular momenta in the region 6–18 is +4keV and the root mean square deviation is 22 keV.

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Authors and Affiliations

  1. Research Institute of Physics, Stockholm, Sweden

    T. Lönnroth (Visitor), L. Végh (Visitor) & K. Wikström

  2. Department of Physics, University of Helsinki, Helsinki, Finland

    T. Lönnroth (Visitor) & B. Fant

  3. Institute of Nuclear Research, Debrecen, Hungary

    L. Végh (Visitor)

Authors
  1. T. Lönnroth
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  2. L. Végh
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  3. K. Wikström
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  4. B. Fant
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Lönnroth, T., Végh, L., Wikström, K. et al. High-spin states in206Bi populated in the205Tl(α, 3n) reaction. Z Physik A 287, 307–317 (1978). https://doi.org/10.1007/BF01481711

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  • DOI: https://doi.org/10.1007/BF01481711

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