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Decay of oriented149Nd and low-lying levels in theN=88149Pm nucleus

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Czechoslovak Journal of Physics Aims and scope

Abstract

Levels of the149Pm nucleus populated in the149Nd decay were studied by using the low-temperature nuclear orientation technique. The parent149Nd nuclei were oriented in a gadolinium host. The normalized γ-ray intensities were determined for twenty seven transitions in the daughter149Pm nucleus. The characteristics of149Pm levels at 288·2 and 425·3 keV were determined as 9/2+ and 7/2+, respectively, and the previous spin-assignments could be unambiguously confirmed for several other levels in149Pm. The substantial new information on multipole mixing ratios of γ-rays in149Pm is presented. The quasiparticle-rotor model was applied to the description of the structure of the low-lying levels in149Pm.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, USSR

    P. Šimeček, M. Finger & V. M. Tsupko-Sitnikov

  2. Faculty of Mathematics and Physics, Charles University, Prague, Ke Karlovu 5, 12116, Praha 2, Czechoslovakia

    I. Procházka

  3. Faculty of Nuclear Science and Physical Engineering, Czech Technical University, Břehová 7, 115 19, Praha 1, Czechoslovakia

    J. Koníček & Z. Janout

Authors
  1. P. Šimeček
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  2. M. Finger
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  3. V. M. Tsupko-Sitnikov
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  4. I. Procházka
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  5. J. Koníček
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  6. Z. Janout
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Additional information

One of us (P.S.) would like to thank Dr. B. A. Alikov, Dr. Kh. N. Badalov and Dr. J. Vavryszczuk for helpful discussions and continuous encouragement.

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Šimeček, P., Finger, M., Tsupko-Sitnikov, V.M. et al. Decay of oriented149Nd and low-lying levels in theN=88149Pm nucleus. Czech J Phys 41, 20–30 (1991). https://doi.org/10.1007/BF01606394

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  • DOI: https://doi.org/10.1007/BF01606394

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