Electric quadrupole moments of17/2−and13/2−subsequent isomers inPo209

Abstract

The electric quadrupole interaction of $^{209}\mathrm{Po}$ high spin isomers in a Bi single crystal has been investigated by the time-differential perturbed angular distribution (TDPAD) technique. A two-level analysis procedure for the $17/{2}^{\ensuremath{-}}$and $13/{2}^{\ensuremath{-}}$ subsequent isomers was employed. The spectroscopic electric quadrupole moments were measured as $|Q(17/{2}^{\ensuremath{-}})|=65.9(7)e {\mathrm{fm}}^{2}$ and $|Q(13/{2}^{\ensuremath{-}})|=12.6(5)e {\mathrm{fm}}^{2}$. The experimental values of equilibrium deformations were extracted.