The πh<suB>11/2</suB> Band-Crossing and Possible Octupole
Correlations in <sup>122</sup>Ba

Chin. Phys. Lett.

2001, Vol. 18

Issue (8): 1027-1029 DOI:

Original Articles

The πh_11/2 Band-Crossing and Possible Octupole Correlations in ¹²²Ba

ZHU Sheng-Jiang¹;M. Sakhaee¹;YANG Li-Ming¹;GAN Cui-Yun¹;ZHU Ling-Yan¹;XU Rui-Qing¹;JIANG Zhuo¹;ZHANG Zheng¹;LONG Gui-Lu¹;WEN Shu-Xian²;WU Xiao-Guang²

¹Department of Physics, Tsinghua University, Beijing 100084 ²China Institute of Atomic Energy, Beijing 102413

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ZHU Sheng-Jiang, M. Sakhaee, YANG Li-Ming et al 2001 Chin. Phys. Lett. 18 1027-1029

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Abstract High-spin states in ¹²²Ba have been investigated in the ¹⁰⁷Ag(¹⁹F, 4n) reaction by in-beam γ-ray spectroscopic methods. The ground-state band has been observed with spin up to 20ħ and a negative-parity band is identified with spin state up to 19ħ. A band-crossing in the yrast band is observed at a rotational frequency of ħω ≈ 0.36 MeV and, in accordance with cranked shell model calculations, is interpreted as arising from the alignment of two h_11/2 protons. Strong E1 transitions between the negative-parity and the yrast bands have been observed, which are proposed as possible evidence for octupole correlations.

Keywords: 21.10.Re 23.20.Lv 21.60.Ev 27.60.+j

Published: 01 August 2001

PACS:	21.10.Re	(Collective levels)
	23.20.Lv	(γ-transitions and level energies)
	21.60.Ev	(Collective models)
	27.60.+j	(90 ≤ A ≤ 149)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I8/01027

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	ZHU Sheng-Jiang
	M. Sakhaee
	YANG Li-Ming
	GAN Cui-Yun
	ZHU Ling-Yan
	XU Rui-Qing
	JIANG Zhuo
	ZHANG Zheng
	LONG Gui-Lu
	WEN Shu-Xian
	WU Xiao-Guang

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