High-spin study of 162Ta

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ID: 266474
2011
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Abstract
Excited states in the odd-odd neutron deficient nucleus ${}^{162}\mathrm{Ta}$ ($Z=73$, $N=89$) have been studied for the first time. The gamma spectroscopy analysis using $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidences revealed a strongly coupled rotational structure that was established up to large angular momentum states. The rotational band was assigned to the configuration $\ensuremath{\pi}{h}_{11/2}[514]9/2\ensuremath{\bigotimes}\ensuremath{\nu}{i}_{13/2}[660]1/2$ based on its rotational and electromagnetic properties. The data are interpreted within the framework of total Routhian surface calculations, which suggests an axially symmetric shape with a $\ensuremath{\gamma}$-soft minimum at ${\ensuremath{\beta}}_{2}\ensuremath{\approx}0.16$ and $\ensuremath{\gamma}\ensuremath{\approx}{6}^{\ensuremath{\circ}}$. The crossing of the signature partners observed in heavier ($N\ensuremath{\geqslant}91$) odd-odd nuclides in this mass region is found to be absent at $N=89$. This might be correlated with a change in $S$-band structure above the paired band crossing at these neutron numbers.
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2011physicalhigh-spin Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
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Journal physical review c
Year 2011
DOI
doi:10.1103/PhysRevC.84.064312
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