Observation of CH A->X, Cn B->X, and NH A->X Emissions in Gas-phase Collisions of Fast O (³P) Atoms with Hydrazines

Abstract

Optical emissions in single-collision reactions of fast (20 eV laboratory translational energy) O(³P) atoms with hydrazine, methylhydrazine, and 1,1-dimethylhydrazine have been measured in a crossed-beams geometry. The emissions were observed in the wavelength range 325-440 nm, and were identified as the CH (A^2>delta->X***2***---, (for methylhydrazine), xxx (for methylhydrazine)and NH xxx transitions (for all three hydrazines). The experimental vibration-rotation bands were fit to a synthetic spectrum of CH, CN and NH with given vibrational and rotational temperatures.