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Lifetime of a new high-spin isomer in 150 Dy

  • H. Watanabe
  • Y. Wakabayashi
  • Y. Gono
  • T. Fukuchi
  • H. Ueno
  • W. Sato
  • A. Yoshimi
  • D. Kameda
  • H. Miyoshi
  • T. Kishida
  • Y. Kobayashi
  • T. Morikawa
  • S. Motomura
  • O. Kashiyama
  • K. Saito
  • A. Odahara
  • K. Asahi
Letter

Abstract.

A new high-spin isomer in 150Dy has been observed at an excitation energy of 10.3 MeV by combining the inverse-kinematic reaction induced by a pulsed beam of 132Xe and the \(\gamma\)-ray recoil-shadow technique. The half-life of this isomeric state has been determined to be \(T_{1/2} = 1.6 \pm 0.6\) ns using the conventional centroid-shift method with the 141Pr(16O, p6n)150Dy reaction at 165 MeV. The mechanism producing high-spin isomers in N = 83,84 isotones is qualitatively discussed in terms of the difference of the neutron particle-hole configuration between the high-spin isomer and the lower-lying state.

Keywords

Excitation Energy Isomeric State Pulse Beam 150Dy Reaction 
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

  • H. Watanabe
    • 1
  • Y. Wakabayashi
    • 2
  • Y. Gono
    • 2
  • T. Fukuchi
    • 2
  • H. Ueno
    • 1
  • W. Sato
    • 1
  • A. Yoshimi
    • 1
  • D. Kameda
    • 3
  • H. Miyoshi
    • 3
  • T. Kishida
    • 1
  • Y. Kobayashi
    • 1
  • T. Morikawa
    • 2
  • S. Motomura
    • 1
  • O. Kashiyama
    • 2
  • K. Saito
    • 2
  • A. Odahara
    • 4
  • K. Asahi
    • 1
  1. 1.The Institute of Physical and Chemical Research (RIKEN)Wako, SaitamaJapan
  2. 2.Department of PhysicsKyushu UniversityFukuokaJapan
  3. 3.Department of PhysicsTokyo Institute of TechnologyMeguro, TokyoJapan
  4. 4.Nishinippon Institute of TechnologyKanda, FukuokaJapan

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