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
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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. |
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