E2 Core Polarization in 92Mo by Lifetime Measurement of the 6+ State

The lifetime of the 6 + state in 92 Mo was measured by means of the gamma-gamma delayed coincidence method. The 330 keV (6 + →4 + ) gamma-ray from the 2613 keV level in 92 Mo has been found to decay with a half-life T 1/2 =1.51±0.08 ns. An experimental value of B (E2: 6 + →4 + ) has been determined to be 76±2 e 2 fm 4 . Assuming four-particle configurations of g 9/2 and p 1/2 protons both for the 6 + and 4 + states a polarization charge for the g 9/2 proton is deduced to be 0.61 e .