Lifetime measurements in the Yrast magnetic band in 193Pb

Lifetimes of states in the vi -1 13/2 ⊗ π (i 13/2 h 9/2 ) 11 - magnetic band in 193 Pb have been measured with the recoil-distance Doppler-shift (RDDS) method. This band is built on the I π = 29/2 - isomer (E ex = 2584 keV, T 1/2 = 9.4 ns). High-spin states in 193 Pb were populated in the 170 Er ( 28 Si, 5n) reaction at 149 MeV. The nuclear γ-decay was detected with the GASP spectrometer in combination with the Koln plunger device. These results provide for the first time a complete set of experimental observables for such an excitation in atomic nuclei.