g-Factor of the high-spin isomer in 149Dy and a multi-quasiparticle configuration caused by the N=82 core excitations

Hiroshi Watanabe, H. Ueno, D. Kameda, W. Sato, A. Yoshimi, H. Miyoshi, T. Kishida, Y. Kobayashi, A. Odahara, Y. Gono, K. Asahi

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8 Citations (Scopus)


The nuclear g-factor of the T1/2 = 28 ns high-spin isomer in 149Dy has been measured using the γ-ray time-differential perturbed angular distribution (TDPAD) technique with a pulsed beam of 132Xe. The experimental value g=+0.41(6) is in good agreement with a fully aligned multi-quasiparticle configuration π(h211/2)⊗ν (f7/2h9/2i13/2(d-2 3/2)0). This result indicates that only neutron particle-hole excitations across the N=82 shell-closure occur at this isomeric state.

Original languageEnglish
Pages (from-to)365-378
Number of pages14
JournalNuclear Physics A
Issue number3-4
Publication statusPublished - Dec 15 2003
Externally publishedYes


  • Dy deduced high-spin isomer g factor, configuration
  • Measured delayed E, I (θ,H,t)
  • Nuclear reactions Mg(Xe, xn)Dy, E=7.0 MeV/nucleon
  • Time-differential perturbed angular distribution method, deformed independent particle model analysis

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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