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A new isomer in 136 Ba populated by deep inelastic collisions

  • T. ShizumaEmail author
  • Z. G. Gan
  • K. Ogawa
  • H. Nakada
  • M. Oshima
  • Y. Toh
  • T. Hayakawa
  • Y. Hatsukawa
  • M. Sugawara
  • Y. Utsuno
  • Z. Liu
Letter

Abstract.

Excited states in 136Ba, populated in deep inelastic collisions by the interaction of 450 MeV 82Se ions with a 139La target, have been studied by means of in-beam \(\gamma\)-ray spectroscopy. A new isomer with \(I^\pi = (10^ + )\) has been identified at an excitation energy E x = 3.357 MeV. The half-life was determined as \(T_{1/2} = 94\pm10\) ns. The extracted B(E2) value is much smaller than those in 132Te and 134Xe. This hindrance is investigated by a shell model calculation.

Keywords

Spectroscopy Excited State Model Calculation Excitation Energy Shell Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • T. Shizuma
    • 1
    Email author
  • Z. G. Gan
    • 1
    • 2
  • K. Ogawa
    • 3
  • H. Nakada
    • 3
  • M. Oshima
    • 1
  • Y. Toh
    • 1
  • T. Hayakawa
    • 1
  • Y. Hatsukawa
    • 1
  • M. Sugawara
    • 4
  • Y. Utsuno
    • 1
  • Z. Liu
    • 2
  1. 1.Japan Atomic Energy Research InstituteTokai, IbarakiJapan
  2. 2.Institute of Modern PhysicsChinese Academy of ScienceLanzhouPRC
  3. 3.Chiba UniversityChibaJapan
  4. 4.Chiba Institute of TechnologyNarashino, ChibaJapan

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