Reinvestigation of the collective band structures in odd-odd 138Pm nucleus
Reinvestigation of the collective band structures in odd-odd 138Pm nucleus
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DOI：
10.1140/epja/i2015-15060-9
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
H. Li;Z. Xiao;S. Zhu;C. Qi;E. Y. Yeoh;Z. Zhang;R. Wang;H. Yi;W. Yan;Q. Xu;X. G. Wu;C. He;Y. Zheng;G. Li;C. Li;H. W. Li;J. J. Liu-J.;S. P. Hu;J. L. Wang;S. Yao
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文献类型：
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作者：
H. Li;Z. Xiao;S. Zhu;C. Qi;E. Y. Yeoh;Z. Zhang;R. Wang;H. Yi;W. Yan;Q. Xu;X. G. Wu;C. He;Y. Zheng;G. Li;C. Li;H. W. Li;J. J. Liu-J.;S. P. Hu;J. L. Wang;S. Yao
利用能量为103 MeV的124 Te（19 F，5 n）反应重新研究了138 Pm奇-奇核的高自旋态。大多数已知的跃迁和能级都得到了证实。修订了一些波段，并设立了一个新的波段。对于8+态的π h_（11/2）→ π ν h_（11/2）带，没有发现信号反转的证据，对带（2）计算了B（M1）/B（E2）的实验值和理论值，支持π g_（7/2）[413]5/2+ π ν h_（11/2）[514]9/2−Nilsson组态归属。四个ΔI= 2跃迁的带被初步指定为双退耦带。其他三个带被认为是扁三轴带。在全Routhian表面和粒子-转子模型的计算下，讨论了这些谱带的可能组态归属。
The high-spin states in the odd-odd138Pm nucleus have been reinvestigated via the124Te(19F, 5n) reaction at the beam energy of 103 MeV. Most of the known transitions and levels are confirmed. A number of bands are revised and one new band has been established. For the yrastπh11/2⊗νh11/2band based on 8+state, no evidence supporting the occurence of signature inversion is found. The experimental and theoreticalB(M1)/B(E2) ratios have been calculated for band (2), which support theπg7/2[413]5/2+⊗νh11/2[514]9/2−Nilsson configuration assignment. Four bands withΔI= 2 transitions are tentatively assigned as doubly decoupled bands. The other three bands are proposed as oblate-triaxial bands. The possible configuration assignments for these bands are also discussed under the calculations of total Routhian surface and particle-rotor model.