Lifetime measurement of excited states in the shape-phase-transitional nucleus {sup 98}Zr

Lifetimes of excited states in {sup 98}Zr have been investigated with a {beta}{gamma}{gamma} fast-timing experiment performed at the Lohengrin mass separator at the Institut Laue-Langevin. Five lifetimes of both yrast and off-yrast states have been measured, including the lowest upper limit for {tau}(2{sub 1}{sup +}). The results are compared with recent shell-model and interacting-boson-model calculations.