Magnetic depolarization of cs(2) vapor fluorescence

The CS2 V system (2900-3300 angstrom) has been excited using a high-pressure xenon lamp in conjunction with a fast monochromator and the degree of polarization of the resulting fluorescence has been measured. From the depolarization of the fluorescence (lambda(ex)=3200 angstrom) with applied magnetic field the product (g) over bar tau = 7.3 +/- 0.9 x 10(-9) sec has been determined from level-crossing studies. Using the radiative lifetime tau=1.5 x 10(-5) sec, the average effective g value of the excited state is estimated to be (g) over bar = 4.9 +/- 0.6 x 10(-4).