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Properties of isomeric states and the πd 3/2-vi 13/2 multiplet in194Au

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The level structure of194Au has been studied by observing prompt and delayedγ-rays following194Pt(p,n) and195Pt(p,2n) reactions. The conversion electron andγ-ray spectra from the decay of the 0.42s (10) and 0.60s (5+) isomers at 476 keV and 107.4 keV, respectively, have been measured using the He-jet method. The half-lives of the 6+ (278.2 keV, 1.1±0.4 ns), 7+ (224.6 keV, 2.6±0.2 ns) and 8+ (406.8 keV, 2.9±0.4 ns) members of theπd 3/2-vi 13/2 multiplet have been obtained from the time distributions between cyclotron beam pulses andγ-rays depopulating these levels. A calculation made assuming a pure two-particle configuration for the multiplet predicts very well theB(E2) values for the transitions between the levels of this multiplet but the calculatedB(M1) values are not in agreement with experimental results.

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Financial support from the Academy of Finland is gratefully acknowledged. We also thank Professor P.O. Lipas for reading the manuscript and for his helpful comments.

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Pakkanen, A., Piiparinen, M., Kortelahti, M. et al. Properties of isomeric states and the πd 3/2-vi 13/2 multiplet in194Au. Z Physik A 282, 277–283 (1977). https://doi.org/10.1007/BF01414895

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  • DOI: https://doi.org/10.1007/BF01414895

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