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Investigation of lifetimes in the dipole band of 139Sm

  • Regular Article — Experimental Physics
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Abstract

Lifetimes have been measured for a dipole band in 139Sm using DSAM. The deduced B(M1) and B(E2) values as well as B(M1)/B(E2) ratios are compared with calculations in the framework of the TAC (Tilted Axis Cranking) and SPAC (Shears mechanism with Principal Axis Cranking) models. The dipole band in 139Sm can be considered as a magnetic rotational band with a prolate or triaxial nuclear deformation.

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Author notes

  1. E. O. Lieder & R. M. Lieder

    Present address: iThemba Laboratory for Accelerator Based Sciences, Somerset West, 7129, South Africa

Authors and Affiliations

  1. Institut für Kernphysik, Forschungszentrum Jülich, D-52425, Jülich, Germany

    A. A. Pasternak, E. O. Lieder, R. M. Lieder, W. Gast & Ts. Venkova

  2. A.F. Ioffe Physical Technical Institute RAS, RU-194021, St. Petersbourg, Russia

    A. A. Pasternak & E. O. Lieder

  3. Institut für Strahlen- und Kernphysik, University of Bonn, D-53115, Bonn, Germany

    S. Chmel

  4. Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784, Sofia, Bulgaria

    Ts. Venkova

  5. Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, I-35020, Legnaro, Italy

    G. de Angelis, D. R. Napoli & A. Gadea

  6. Dipartimento di Fisica dell’Università, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131, Padova, Italy

    D. Bazzacco, R. Menegazzo & S. Lunardi

  7. Institut de Recherches Subatomique IReS, F-67037, Strasbourg, France

    G. Duchêne

Authors
  1. A. A. Pasternak
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  2. E. O. Lieder
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  3. R. M. Lieder
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  4. S. Chmel
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  5. W. Gast
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  6. Ts. Venkova
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  7. G. de Angelis
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  8. D. R. Napoli
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  9. A. Gadea
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  10. D. Bazzacco
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  11. R. Menegazzo
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  12. S. Lunardi
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  13. G. Duchêne
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Corresponding author

Correspondence to E. O. Lieder.

Additional information

Communicated by D. Guerreau

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Pasternak, A.A., Lieder, E.O., Lieder, R.M. et al. Investigation of lifetimes in the dipole band of 139Sm. Eur. Phys. J. A 37, 279–286 (2008). https://doi.org/10.1140/epja/i2008-10631-5

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  • DOI: https://doi.org/10.1140/epja/i2008-10631-5

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