Doubly Decoupled Structure in Odd--Odd <sup>178-186</sup>Ir Nuclei

Chin. Phys. Lett.

2001, Vol. 18

Issue (1): 27-29 DOI:

Original Articles

Doubly Decoupled Structure in Odd--Odd ^178-186Ir Nuclei

ZHANG Yu-Hu¹;T. Hayakawa²;M. Oshima²;Y. Toh²;J.Katakura²; Y. Hatsukawa²;M.Matsuda²;N. Shinohara²;T.Ishii²;H. Kusakari³;M.Sugawara⁴;T. Komatsubara⁵

¹Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou730000 ²Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195,Japan ³Chiba University, Inage-ku, Chiba 263-8512, ⁴Japan Chiba Institute of Technology, Narashino, Chiba 275-0023, ⁵Institute of Physics and Tandem Accelerator Center, University ofTsukuba, Ibaraki 305-0006, Japan

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ZHANG Yu-Hu, T. Hayakawa, M. Oshima et al 2001 Chin. Phys. Lett. 18 27-29

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Abstract High-spin states in ^178,180Ir have been studied via the ^152,154Sm(³¹P, 5nγ) reactions through excitation functions, x-γ and γ -γ-t coincidence measurements. A doubly decoupled band has been identified in each of the isotopes. The level spacings for such structures in odd--odd
^178-186Ir have been inspected and thus a regular level staggering as a function of the neutron number is revealed. This particular phenomenon may be associated with bandmixing at lower excitation energies.

Keywords: 21.10.Re 23.20.Lv 27.70.+q

Published: 01 January 2001

PACS:	21.10.Re	(Collective levels)
	23.20.Lv	(γ-transitions and level energies)
	27.70.+q	(150 ≤ A ≤ 189)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I1/027

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	ZHANG Yu-Hu
	T. Hayakawa
	M. Oshima
	Y. Toh
	J.Katakura
	Y. Hatsukawa
	M.Matsuda
	N. Shinohara
	T.Ishii
	H. Kusakari
	M.Sugawara
	T. Komatsubara

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