Near-yrast, medium-spin structure of the $^{107}$Mo nucleus

Excited states in $^{107}$Mo, populated in spontaneous fission of $^{248}$Cm, were studied by use of the eurogam2 multidetector array. Spins and parities of the ground state and the 66.0-, 152.1-, and 458.5-keV excited levels, reported previously, were changed based on conversion-coefficient and angular-correlation measurements. Octupole deformation reported previously in $^{107}$Mo is dismissed, and we explain the near-yrast structure of $^{107}$Mo in terms of rotational bands built on the 5/2$^+$[413], 3/2$^+$[411], and 7/2$^-$[523] orbitals.