Observation of a Discrete-Line Superdeformed Band up to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>60</mml:mn><mml:mi>ℏ</mml:mi></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Dy</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>152</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>

A rotational band of nineteen transitions with a moment of inertia ${\mathfrak{J}}_{\mathrm{band}}^{(2)}$ of $84{\ensuremath{\hbar}}^{2}$ ${\mathrm{MeV}}^{\ensuremath{-}1}$ has been observed in $^{152}\mathrm{Dy}$. The band feeds into the oblate yrast states between ${19}^{\ensuremath{-}}$ and ${25}^{\ensuremath{-}}$ and it is proposed that the lowest member of the band has a spin of ${22}^{+}$ and thus the band extends up to $60\ensuremath{\hbar}$. It is identified as the yrast superdeformed band and its intensity accounts for the whole of the ridge structure seen previously in continuum ${E}_{\ensuremath{\gamma}}\ensuremath{-}{E}_{\ensuremath{\gamma}}$ correlations.

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