Octupole collectivity in {sup 98,100,102}Mo

Excited states in {sup 98,100,102}Mo have been studied via the {sup 30}Si+{sup 168}Er-induced fission reaction at a beam energy of 142 MeV. Prompt {gamma} rays were detected with the EUROBALL III multidetector array. The level schemes are extended with more than 20 new transitions and interpreted in the framework of a soft-octupole vibration model.