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Level structure of149Nd. The decay of149Pr

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The decay of149Pr (T 1/2=2.2 min) has been studied using the two fission product separators JOSEF and LOHENGRIN to produce the149Pr nucleus. A level scheme for149Nd has been established. Theβ-branching and logft values for the excited levels were deduced from the analysis ofγ-intensity balances. Furthermore, the spins and parities for most of the excited states observed were obtained from the comparison between the present work, the neutron capture results and the pick-up reactions. The positive parity levels have been described with the Nilsson model with Coriolis andΔN=2 interactions included. The properties of the negative parity states cannot be explained as easily; however, it has been attempted to extract the structure of the ground state\((I^\pi = \tfrac{5}{2}^ - )\) and the first excited states\((I^\pi = \tfrac{7}{2}^ - and\tfrac{3}{2}^ - )\).

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Author notes

  1. G. Sadler

    Present address: Inst. für Kernpysik, Kernforschungsanlage Jülich, D-5170, Germany

  2. W. Tenten

    Present address: Zentrallabor für Elektronik, Kernforschungsanlage Jülich, D-4170, Germany

  3. J. P. Bocquet

    Present address: Université Scientifique et Médicale de Grenoble, France

  4. B. Pfeiffer

    Present address: II. Phys. Inst., Univ. Gießen, Germany

Authors and Affiliations

  1. Institut Laue-Langevin, Grenoble, France

    J. A. Pinston, R. Roussille, G. Sadler, W. Tenten, J. P. Bocquet, B. Pfeiffer & D. D. Warner

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  1. J. A. Pinston
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  2. R. Roussille
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  3. G. Sadler
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  5. J. P. Bocquet
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Additional information

The authors would like to express their thanks to Drs. J. Blachot, E. Monnand, F. Schussler and K. Sistemich for their assistance during the measurements, and to Drs. T. von Egidy, P. Kleinheinz and O.W.B. Schult for a critical reading of the manuscript.

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Pinston, J.A., Roussille, R., Sadler, G. et al. Level structure of149Nd. The decay of149Pr. Z Physik A 282, 303–314 (1977). https://doi.org/10.1007/BF01414898

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  • DOI: https://doi.org/10.1007/BF01414898

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