A simultaneous lifetime and relative g -factor measurement of the levels in 138,142 Ce was performed using the Time Dependent Recoil Into Vacuum (TDRIV) technique. The excitation mechanism was Coulomb excitation in inverse kinematics, and the experimental setup included the Yale plunger device and the Gammasphere array. The latter was used to extract angular distributions for the γ -ray transitions at various target-to-stopper distances. A factor of 0.26(8) for 138 Ce was obtained relative to the literature value of in 142 Ce. In addition, high-precision values of the strengths were obtained. The new data support a proposed subshell closure for the orbital at .
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