SPECTROSCOPIC STUDY OF THE 6111 \AA BAND OF $NO_{2}$

Abstract

Laser-induced fluorescence has been used to rotationally analyze Che 6111 {\AA} vibrational band of vapor phase $NO_{2}$. P, Q, and R branches have been observed and assigned. Rotational constants similar to the 5935 {\AA} $band^{1}$ have been obtained. Perturbations have been detected through lifetime measurements of individual rotational lines under ``collision-free” conditions ($\leq$ 1 mTorr pressure).