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Conversion electron measurement in the β--decay of 151Pr

  • Y. Kojima
  • M. Shibata
  • A. Taniguchi
  • T. Hanafusa
  • E. Yoshida
  • K. Shizuma
  • Y. Kawase
  • S. Yamada

Abstract:

The β--decay of 151Pr produced by the thermal neutron-induced fission of 235U has been studied using an on-line isotope separator. From an internal-conversion electron measurement with a Si(Li) detector, K-conversion coefficients were obtained for 20 γ-transitions. Spins and parities of 6 excited levels in 151Nd were newly determined from the deduced multipolarities: even parities for the 543 and 627 keV levels, odd parities for 250 and 599 keV, (3/2, 5/2)+ for 685 keV, and (1/2, 3/2)+ for 880 keV. The level structure was compared with the rotation-vibration coupling Nilsson model.

PACS. 21.10.Hw Spin, parity, and isobaric spin – 23.20.Nx Internal conversion and extranuclear effects – 27.70.+q 150 ⩽ A ⩽ 189 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2003

Authors and Affiliations

  • Y. Kojima
    • 1
  • M. Shibata
    • 2
  • A. Taniguchi
    • 3
  • T. Hanafusa
    • 1
  • E. Yoshida
    • 1
  • K. Shizuma
    • 1
  • Y. Kawase
    • 3
  • S. Yamada
    • 3
  1. 1.Quantum Energy Applications, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, JapanJP
  2. 2.Facility for Nuclear Materials, Nagoya University, Nagoya 464-8603, JapanJP
  3. 3.Research Reactor Institute, Kyoto University, Kumatori 590-0494, JapanJP

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