Multi-quasiparticle structures up to spin $\sim{44}\hbar$ in the odd-odd nucleus $^{168}$Ta

X. Wang; D. J. Hartley; M. A. Riley; L. L. Riedinger; A. Aguilar; M. P. Carpenter; C. J. Chiara; P. Chowdhury; I. Darby; U. Garg; Q. Ijaz; R. V. F. Janssens; F. G. Kondev; S. Lakshmi; T. Lauritsen; W. C. Ma; E. A. McCutchan; S. Mukhopadhyay; E. P. Seyfried; I. Stefanescu; S. K. Tandel; U. S. Tandel; C. Teal; J. R. Vanhoy; S. Zhu

doi:10.1103/physrevc.82.034315

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arXiv · 1011.1834

Multi-quasiparticle structures up to spin $\sim{44}\hbar$ in the odd-odd nucleus $^{168}$Ta

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Abstract

High-spin states in the odd-odd nucleus $^{168}$Ta have been populated in the $^{120}$Sn($^{51}$V,3n) reaction. Two multi-quasiparticle structures have been extended significantly from spin $\sim{20\hbar}$ to above ${40\hbar}$. As a result, the first rotational alignment has been fully delineated and a second band crossing has been observed for the first time in this nucleus. Configurations for these strongly-coupled rotational bands are proposed based on signature splitting, $B(M1)/B(E2)$ ratio information, and observed rotation-alignment behavior. Properties of the observed bands in $^{168}$Ta are compared to related structures in the neighboring odd-$Z$, odd-$N$, and odd-odd nuclei and are discussed within the framework of the cranked shell model.

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X. Wang, D. J. Hartley, M. A. Riley, L. L. Riedinger, A. Aguilar, M. P. Carpenter, C. J. Chiara, P. Chowdhury, I. Darby, U. Garg, Q. Ijaz, R. V. F. Janssens, F. G. Kondev, S. Lakshmi, T. Lauritsen, W. C. Ma, E. A. McCutchan, S. Mukhopadhyay, E. P. Seyfried, I. Stefanescu, S. K. Tandel, U. S. Tandel, C. Teal, J. R. Vanhoy, S. Zhu. 2010-11-08. Multi-quasiparticle structures up to spin $\sim{44}\hbar$ in the odd-odd nucleus $^{168}$Ta. https://doi.org/10.1103/physrevc.82.034315

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