Near-yrast, medium-spin structure of the Mo-107 nucleus

Excited states in Mo-107, populated in spontaneous fission of Cm-248, 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 Mo-107 is dismissed, and we explain the near-yrast structure of Mo-107 in terms of rotational bands built on the 5/2(+)[413], 3/2(+)[411], and 7/2(-)[523] orbitals.