Configuration-dependent band structures in odd-odd Ir-180

doi:10.1103/PhysRevC.65.014302

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	Configuration-dependent band structures in odd-odd Ir-180
	Katakura, J ; Zhang, YH ; Hayakawa, T ; Oshima, M ; Hatsukawa, Y ; Matsuda, M ; Kusakari, H ; Sugawara, M ; Komatsubara, T ; Furuno, K
刊名	PHYSICAL REVIEW C
	2002
卷号	65 期号:12 页码:15
ISSN号	0556-2813
DOI	10.1103/PhysRevC.65.014302
英文摘要	High-spin states in Ir-180 have been investigated by means of in-beam gamma-ray spectroscopy techniques with the (154)sm(P-31,5n gamma)Ir-180 reaction. Excitation functions, x-gamma and gamma-gamma-t coincidences, DCO (directional correlation of gamma rays deexciting oriented states) ratios, and intraband B(M1)/B(E2) ratios were measured. Five rotational bands have been identified and 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-mass and even-mass nuclei. The neutron AB crossing is observed at (h) over bar omega(c)=0.26(1) MeV for the pi1/2(-)[541] x nu1/2(-)[521] and pi1/2(-)[541] x nu5/2(-)[512] bands, respectively. Staggering of levels as a function of the number of neutron pairs is revealed in the pi1/2(-)[541] x nu 1/2(-)[521] doubly decoupled bands of Ir178-186. The gradual alignment gains at low rotational frequencies are observed in the two strongly coupled bands. Band crossings and alignments in Ir-180 a-re discussed with reference to the total Routhian surface and cranked shell model calculations performed for the neighboring odd-mass nuclei.
WOS关键词	HIGH-SPIN STATES ; RARE-EARTH NUCLEI ; SIGNATURE INVERSION ; DEFORMED-NUCLEI ; ROTATIONAL BANDS ; DECOUPLED BANDS ; DOUBLE BLOCKING ; ALIGNMENT ; SPECTROSCOPY ; CROSSINGS
WOS研究方向	Physics
语种	英语
出版者	AMERICAN PHYSICAL SOC
WOS记录号	WOS:000173308000011
公开日期	2010-10-29
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/1259]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者	Zhang, YH
作者单位	1.Chiba Univ, Inage Ku, Chiba 2638512, Japan 2.Chiba Inst Technol, Chiba 2750023, Japan 3.Japan Atom Energy Res Inst, Ibaraki 3191195, Japan 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Katakura, J,Zhang, YH,Hayakawa, T,et al. Configuration-dependent band structures in odd-odd Ir-180[J]. PHYSICAL REVIEW C,2002,65(12):15.
APA	Katakura, J.,Zhang, YH.,Hayakawa, T.,Oshima, M.,Hatsukawa, Y.,...&Furuno, K.(2002).Configuration-dependent band structures in odd-odd Ir-180.PHYSICAL REVIEW C,65(12),15.
MLA	Katakura, J,et al."Configuration-dependent band structures in odd-odd Ir-180".PHYSICAL REVIEW C 65.12(2002):15.