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Decay energies of the low-spin states of147Tb and148Tb

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Using112Cd(40Ar,pxn) reactions andγ-ray spectroscopy, the EC/β + and EC(K)/β + probability ratios were determined for individualβ-transitions in the147Tb(1.6 h)→147Gd and148Tb(60 min)→148Gd decays. Under assumption of applicability of theoretical ratios for allowedβ-decays on the first-forbidden nonunique transitions studied here, the experimental ratios were converted into information on decay energies. Combining the results with the known masses of147,148Gd andQ α values of neutron-deficient holmium-to-lutetium isotopes, mass excesses could be determined for147Tb,148Tb, low-spin151Ho, low-spin152Ho,155Tm,156Tm and159Lu.

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Authors and Affiliations

  1. II. Physikalisches Institut, Universität Göttingen, Federal Republic of Germany

    P. Tidemand-Petersson, E. Runte, W. -D. Schmidt-Ott & U. J. Schrewe

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  1. P. Tidemand-Petersson
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  2. E. Runte
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  3. W. -D. Schmidt-Ott
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  4. U. J. Schrewe
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Additional information

We are indebted to Dr. R. Michaelsen for invaluable assistance during the experiments. It is a pleasure to thank the VICKSI group for delivery of excellent40Ar beams and the target laboratory at GSI-Darmstadt for skilful preparation of the cadmium targets.

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Tidemand-Petersson, P., Runte, E., Schmidt-Ott, W.D. et al. Decay energies of the low-spin states of147Tb and148Tb. Z Physik A 320, 405–411 (1985). https://doi.org/10.1007/BF01415717

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  • DOI: https://doi.org/10.1007/BF01415717

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