Knowledge Bank

A systematic study of the intensity of far-infrared, pure rotational laser emission of the molecules OH $(v\le 4,2\pi 1/2)$, OD $(v\le 2,2\pi 1/2)$ and $NH(3\Sigma -)$ Will be presented. The free radicals are prepared by The reactions, respectively, $O(1D)+H2,O(1D)+D2$ and $NH3+h\nu$ in a large excess of rare gas. The relative importance of possible pumping mechanisms such as $V \rightarrow $R and $R\to R$ transfer will be discussed, as well as the observed effects of varying the initial concentrations of the reactants.