ROTATIONAL COOLING OF ANILINE IN AXIS-SYMMETRIC AND PLANAR PULSED SUPERSONIC EXPANSIONS

Laser-induced fluorescence (LIF) has been used to measure rotational temperatures, T//R, of the aniline molecule in axis-symmetric and planar pulsed supersonic expansions of He, Ne, and Ar. The rotational contours of the O-O band of the **1B//2 from **1A//1 transition of aniline were measured by LIF and were fitted by computer-simulated rotational contours, resulting in the determination of T//R.