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Studies on the energy levels of153Eu following the β−-decay of153Sm

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The level scheme of153Eu was investigated by observing the gamma-rays following theβ −-decay of the 47 h153Sm using a high purity Ge(HPGe) detector and a Ge(Li)-Nal(Tl) fast-slow coincidence spectrometer. The energies and relative intensities of about fifty six gamma-ray transitions were determined. Five of them at energies of 124.91, 431.65, 443.24, 487.75 and 623.73 keV were observed and confirmed for the first time in the present singles and/or gamma-gamma coincidence measurements. These new transitions could be fitted into a proposed level scheme of153Eu. Theβ −-decay branching ratios as well as the log (ft) values were obtained.

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Authors and Affiliations

  1. Nuclear Physics Laboratory, Ein-Shams University, Faculties of Girls and Education, Heliopolis, Cairo, Egypt

    S. Abdel-Malak, S. M. Darwish, M. Abou-Leila, N. Walley El-Din & A. M. Hassan

  2. Physics Department, Faculty of Science, Cairo University, Giza, Cairo, Egypt

    S. M. Darwish

  3. Reactor and Neutron Physics Department, Nuclear Research Centre, Atomic Energy Authority, Cairo, Egypt

    A. M. Hassan

Authors
  1. S. Abdel-Malak
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  2. S. M. Darwish
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  3. M. Abou-Leila
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  4. N. Walley El-Din
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  5. A. M. Hassan
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Abdel-Malak, S., Darwish, S.M., Abou-Leila, M. et al. Studies on the energy levels of153Eu following the β−-decay of153Sm. Z Physik A 322, 163–167 (1985). https://doi.org/10.1007/BF01412030

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  • DOI: https://doi.org/10.1007/BF01412030

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