ZEEMAN-EFFECT OF SUPERFLUORESCENTLY POPULATED 6SNF F-1(3) BA-I LEVELS

Zeeman quantum beats of the Ba I 6snf F-1(3) levels were measured betw een n = 10 and 19 by time resolved recording of the exponential decay of the fluorescence on the 6snf F-1(3) - 6s5d D-1(2) transitions. The 6snf F-1(3) levels were populated by superfluorescence pulses from the energetically higher lying 6s(n + 3)d D-1(2) levels, the 1D, levels w ere excited in a resonant two step process by two pulsed dye lasers. T he experimental results of the g(J) values in the 6snf F-1(3) sequence are in fair agreement with the prediction of multi-channel quantum-de fect theory.