Evidence for Coexistence of Spherical and Deformed Shapes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Se</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>72</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>
J. H. HamiltonPhysics Department, Vanderbilt University, Nashville, Tennessee 37235A. V. RamayyaPhysics Department, Vanderbilt University, Nashville, Tennessee 37235W.T. PinkstonPhysics Department, Vanderbilt University, Nashville, Tennessee 37235R. M. RonningenPhysics Department, Vanderbilt University, Nashville, Tennessee 37235G. García-BermúdezPhysics Department, Vanderbilt University, Nashville, Tennessee 37235H. K. CarterPhysics Department, Vanderbilt University, Nashville, Tennessee 37235R.L. RobinsonOak Ridge National Laboratory, ∥, Oak Ridge, Tennessee 37830H. J. KimPhysics Department, Vanderbilt University, Nashville, Tennessee 37235R. O. SayerPhysics Department, Vanderbilt University, Nashville, Tennessee 37235
1974lv
ABI
Annotatsiya
We report evidence for an excited ${K}^{\ensuremath{\pi}}={0}^{+}$ rotational band in $^{72}\mathrm{Se}$ and its mixing with vibrational states. The mean life of the 937-keV ${0}^{+}$\ensuremath{'} state was measured to be 22.8\ifmmode\pm\else\textpm\fi{}1.4 nsec, yielding $B(E2)=36\ifmmode\pm\else\textpm\fi{}7$ single-particle units for the 75-keV ${0}^{+}$\ensuremath{'} \ensuremath{\rightarrow} ${2}^{+}$ transition. From in-beam, $\ensuremath{\gamma}$-ray spectroscopy following the reaction $^{58}\mathrm{Ni}(^{16}\mathrm{O}, 2p)$, a strong $\ensuremath{\gamma}$-ray cascade was observed from an yrast band of levels ${0}^{+}$, ${2}^{+}$,... to spin ${12}^{+}$ in $^{72}\mathrm{Se}$.
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