Lifetime of a new high-spin isomer in 150Dy

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

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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 γ-ray recoil-shadow technique. The half-life of this isomeric state has been determined to be T 1/2 = 1.6 ± 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.

Original languageEnglish
Pages (from-to)163-167
Number of pages5
JournalEuropean Physical Journal A
Volume19
Issue number2
DOIs
Publication statusPublished - Feb 1 2004
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Watanabe, H., Wakabayashi, Y., Gono, Y., Fukuchi, T., Ueno, H., Sato, W., Yoshimi, A., Kameda, D., Miyoshi, H., Kishida, T., Kobayashi, Y., Morikawa, T., Motomura, S., Kashiyama, O., Saito, K., Odahara, A., & Asahi, K. (2004). Lifetime of a new high-spin isomer in 150Dy. European Physical Journal A, 19(2), 163-167. https://doi.org/10.1140/epja/i2003-10150-y