Rotational Bands in 169Re

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ZHOU Xiao-Hong, ZHANG Yu-Hu and ZHENG Yong. Rotational Bands in 169Re[J]. Chinese Physics C, 2002, 26(10): 991-997.
ZHOU Xiao-Hong, ZHANG Yu-Hu and ZHENG Yong. Rotational Bands in 169Re[J]. Chinese Physics C, 2002, 26(10): 991-997. shu
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Received: 2002-04-16
Revised: 1900-01-01
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Rotational Bands in 169Re

    Corresponding author: ZHOU Xiao-Hong,
  • Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319 1195, Japan3 Chiba Institute of Technology, Narashino, Chiba 275 0023, Japan

Abstract: The excited states of 169Re have been investigated by means of in beam γ-ray spectroscopy techniques with the 144Sm(28Si, 1p2nγ)169Re reaction. X-γ and γ-γ-t coincidences, DCO ratios and intra-band B(M1)/B(E2) ratios were measured. A strongly coupled band based on the 9/2 Nilsson state and a decoupled band built on the h9/2 intruder proton orbital (nominally 1/2) have been established. Their configurations are proposed on the basis of B(M1)/B(E2) ratios and by comparing the band properties with known bands in neighboring odd proton nuclei. The neutron AB crossings are observed at ω=0.23 and 0.27 MeV for the π9/2 and π1/2 bands, respectively. Band properties of the neutron AB crossing frequencies, alignment gains and signature splittings are discussed, and compared with those in the heavier odd-A Re isotopes.

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