High-spin states in odd-odd 168^{168}Lu

High-spin states in the odd-odd $^{168}$Lu nucleus, populated in the $^{154}$Sm($^{19}$F,5n) reaction at a beam energy of 96 MeV, were investigated using in-beam $\gamma$-ray spectroscopy techniques. The BC neutron crossing in the yrast band, based on $\pi g_{7/2}[404]7/2^{+} ~{\bigotimes}~ \nu i_{13/2}[642]5/2^{+}$ configuration, occurs at ${\hbar}{\omega}$=0.31 MeV. The two side bands, based on $\pi h_{11/2}[514]9/2^{-} {~\bigotimes ~} \nu i_{13/2}[642]5/2^{+}$ and $\pi h_{9/2}[541]1/2^{-} {~\bigotimes ~} \nu i_{13/2}[642]5/2^{+}$ configurations, show anomalous signature-splitting and signature-inversion in the first one, to occur at ${\hbar}{\omega}$=0.24 MeV. A moderately delayed BC-crossing is anticipated in the second one

First evidence for triaxial superdeformation in \chem{^{161}Lu} and \chem{^{162}Lu}

High-spin states in $^{161}$Lu and $^{162}$Lu have been investigated using the GASP $\gamma$-ray spectrometer array. Excited states in these nuclei have been populated through the $^{100}$Mo($^{65}$Cu, $x$n) reaction at a beam energy of 260 MeV. Four presumably triaxial superdeformed bands, three in $^{162}$Lu and one in $^{161}$Lu, have been observed. This is the first evidence for triaxial superdeformation in the two isotopes