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马英君 小松原哲郎 王守宇 Cederwall B Nyberg J 张玉虎 古野兴平 李容俊 Sletten G Hagemann G Jensen H Gjorup N 刘运祚 《原子核物理评论》2004,21(4):331-333
通过116Cd(14N,5n),Ebeam=65MeV的核反应布居了125Cs的高自旋态.利用在束γ谱学实验方法,进行了γ-γ符合测量,使已知的125Cs核能级纲图得到了扩展,并且修正了某些组态的带头激发能.High-spin states in odd-A nucleus~(125)Cs have been studied via the~(116)Cd(~(14)N, 5n) reaction at 65 MeV bombarding energy. γ-γ coincidences were recorded with the NORDBALL detector array at Niels Bohr Institute in Denmark. After careful data analysis, most of the previously-known bands have been confirmed and 5 new rotational sequences have been identified. Spin/parity and configuration assignments are tentatively proposed for all of the observed bands. In addition, the bandheads of the 9/2~(+)and (1/2~... 相似文献
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High-spin states in ^126Cs are studied via the ^116Cd(^14N,4n) reaction at a beam energy of 65MeV.The sideband of the πvh11/2 yrast band,a ΔI=2 band known from previous study,is developed into a ΔI=1 coupled structure at low spins.This sideband is assigned to be built on the same configuration as the yrast band according to the measured ratios of directional correlation of orientation and observed alignment properties.On the basis of comparisons with the previously proposed chiral doublet bands for ^128,130Cs,the observed two πh11/2 vh11/2 bands are proposed to be candidates for chiral doublet bands in ^126Cs. 相似文献
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通过转动框架下的经验近似,提取了A=160区4个核的剩余p n相互作用对1/2-[541]带的带交叉频率延迟的影响.结果表明,对于奇Z核中1/2-[541]带的带交叉频率的延迟,剩余p n相互作用的影响大约占二分之一左右,表明剩余p n相互作用在其中起着很重要的作用.We estimated the effect of residual p-n interaction on the crossing frequency delay of the 1/2~(-)\ band of four odd-Z nuclei through the empirical method. The result shows that about half of the shift in crossing frequency in the 1/2~-\ band is the effect of residual p-n interaction. The residual p-n interaction plays a very important role in the crossing frequency delay of the 1/2~(-)\ band. 相似文献
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