Negative Parity Bands and Signature Splitting Inversion in <sup>80</sup>Rb

Chin. Phys. Lett.

2003, Vol. 20

Issue (11): 1932-1935 DOI:

Original Articles

Negative Parity Bands and Signature Splitting Inversion in ⁸⁰Rb

WEN Shu-Xian¹;HE Chuang-Ye¹;ZHU Li-Hua¹;WANG Zhi-Min¹;LI Guang-Sheng¹;MA Rui-Gang¹;WU Xiao-Guang¹;YUAN Guan-Jun¹;YANG Chun-Xiang¹;WANG Yue²;ZHANG Zhen-Long²;MENG Rui²;M. Oshima³;Y. Toh³;A. Osa³;M. Koizumi³;Y. Hatsukawa³;M. Matsuda³;T. Hagakawa³;M. M. Ndontcheng⁴

¹China Institute of Atomic Energy, Beijing 102413 ²Department of Physics, Jinlin University, Changchun 130023 ³Japan Atomic Energy Research Institute, Tokai, Japan Department of Physics, University of Douala, Douala, Cameroun

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WEN Shu-Xian, HE Chuang-Ye, ZHU Li-Hua et al 2003 Chin. Phys. Lett. 20 1932-1935

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Abstract High spin states in ⁸⁰Rb were studied via the ⁶⁵Cu+¹⁹F, ⁶⁶Zn+¹⁸O and ⁶⁸Zn+¹⁶O reactions. The 75-MeV ¹⁹F, 76-MeV ¹⁸O and 80-MeV ¹⁶O beams were provided by the CIAE HI-13 Tandem accelerator and JAERI Tandem accelerator. The prompt γ-γ coincidence and the directional correlation from oriented nuclei (DCO) were measured by the detector arrays in CIAE and JAERI. Twenty-three new states with 28 new transitions have been assigned to ⁸⁰Rb. The states were observed up to spins 20⁺ and 22^- in the α = 0 branch for the positive and negative parity yrast bands respectively. The negative parity non-yrast bands were significantly extended up to spins of 22^- and 15^-. The band crossings with frequencies 0.51 MeV and 0.61 ,MeV in the α = 0 cascade were observed for the first time. The signature splitting was observed in both the negative parity bands. The signature inversions at about spins 7ħ and 15ħ were observed.

Keywords: 21.10.Re 23.20.Lv 27.50.+e

Published: 01 November 2003

PACS:	21.10.Re	(Collective levels)
	23.20.Lv	(γ-transitions and level energies)
	27.50.+e	(59 ≤ A ≤ 89)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I11/01932

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	WEN Shu-Xian
	HE Chuang-Ye
	ZHU Li-Hua
	WANG Zhi-Min
	LI Guang-Sheng
	MA Rui-Gang
	WU Xiao-Guang
	YUAN Guan-Jun
	YANG Chun-Xiang
	WANG Yue
	ZHANG Zhen-Long
	MENG Rui
	M. Oshima
	Y. Toh
	A. Osa
	M. Koizumi
	Y. Hatsukawa
	M. Matsuda
	T. Hagakawa
	M. M. Ndontcheng

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