Two-Quasiparticle Bands and Isomers in <sup>98</sup>Sr

Chin. Phys. Lett.

2004, Vol. 21

Issue (11): 2147-2150 DOI:

Original Articles

Two-Quasiparticle Bands and Isomers in ⁹⁸Sr

LI Ming-Liang¹;ZHU Sheng-Jiang¹;J. H. Hamilton²;A. V. Ramayya²;J. K. Hwang²;CHE Xing-Lai¹;ZHANG Zheng¹;YU Ying-Nan¹;ZHENG Ran-Cheng¹; I. Y. Lee³;J. O. Rasmussen³;Y. X. Luo^2,3;W. C. Ma⁴

¹Department of Physics, Tsinghua University, Beijing 100084 ²Department of Physics, Vanderbilt University, Nashville, Tennessee 37235, USA ³Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA ⁴Department of Physics, Mississippi State University, Mississippi 39762, USA

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LI Ming-Liang, ZHU Sheng-Jiang, J. H. Hamilton et al 2004 Chin. Phys. Lett. 21 2147-2150

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Abstract Rotational bands in neutron-rich ⁹⁸Sr nucleus have been investigated by measuring high-fold prompt λ-ray coincidence events of the spontaneous fission of ²⁵²Cf with the Gammasphere detector array. A deformed K=3 band built on the 1838 keV level has been confirmed and extended. Another deformed K=6 band based on the 2535keV level has been established. Both the bands originate most probably from the v _2/9[404] v_2/3[411] two-quasiparticle configuration with Ω=|Ω₁-Ω₂|and Ω=|Ω₁- Ω₂|, respectively. Based on the delay-coincidence measurements, the half-lives for the K=3 and K=6 band head levels have been obtained to be 13±3 ns and 4.5± 1.0 ns, respectively.

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

Published: 01 November 2004

PACS:	21.10.Re	(Collective levels)
	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/Y2004/V21/I11/02147

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	LI Ming-Liang
	ZHU Sheng-Jiang
	J. H. Hamilton
	A. V. Ramayya
	J. K. Hwang
	CHE Xing-Lai
	ZHANG Zheng
	YU Ying-Nan
	ZHENG Ran-Cheng
	I. Y. Lee
	J. O. Rasmussen
	Y. X. Luo
	W. C. Ma

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