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Gyromagnetic ratios of the 3/2+ core vibration states of101Ru and95Mo

  • Nuclei
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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Theg-factors of the first excited 3/2+ states of101Ru and95Mo have been measured by observing the rotation ofγ-γ directional correlations in the decays of 3.3y 101Rh and 61d 95mTc in external magnetic fields of about 9.5T provided by our split coil superconducting magnet. The results:

$$g_{{\raise0.5ex\hbox{$\scriptstyle 3$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}^ + } ({}^{101}Ru,127 keV) = - 0.157(8)$$

and

$$g_{{\raise0.5ex\hbox{$\scriptstyle 3$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}^ + } ({}^{95}Mo,204 keV) = - 0.269(8)$$

are by far more accurate than previous investigations some of which had given quite different results. Bothg-factors are quite well explained by the de Shalit model in its most simple version.

A measurement of the half-life of the 127 keV state of101Ru by delayed coincidences with CsF-detectors gave

$$T_{{\raise0.5ex\hbox{$\scriptstyle 1$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}} ({}^{101}Ru,127 keV) = - 0.66(1) ns$$

in disagreement with most previous measurements.

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Author notes

  1. H. Münning

    Present address: DIMEC GmbH, D-5000, Köln 91, FRG

Authors and Affiliations

  1. Institut für Strahlen- und Kernphysik der Universität Bonn, Federal Republic of Germany

    A. Alzner, E. Bodenstedt, G. Gemünden, C. Herrmann, H. Münning, H. Reif, H. J. Rudolph, R. Vianden & U. Wrede

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  1. A. Alzner
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  2. E. Bodenstedt
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  3. G. Gemünden
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  4. C. Herrmann
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  7. H. J. Rudolph
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Additional information

We thank the Kernforschungszentrum Karlsruhe for cyclotron irradiations. Part of the numerical calculations were performed with the IBM computer of the Hochschulrechenzentrum der Universität Bonn. We gratefully acknowledge the financial support of this investigation by the Bundesministerium für Forschung and Technologie.

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Alzner, A., Bodenstedt, E., Gemünden, G. et al. Gyromagnetic ratios of the 3/2+ core vibration states of101Ru and95Mo. Z Physik A 317, 107–115 (1984). https://doi.org/10.1007/BF01420454

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  • DOI: https://doi.org/10.1007/BF01420454

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