OH(A) Production in the 193-nm Photolysis of HONO

Article abstract of DOI:10.1021/j100403a015

The formation of OH(A) and OD(A) in the 193-nm photolyses of HONO and DONO with a low quantum yield of about 10^-5 is reported.The rotational population of OH(A) can be approximated by a Boltzmann distribution with a temperature of 650 K.It is compared with the predictions of the impulsive and statistical models and is found to be close to the latter.A reinvestigation of the absorption spectrum for HONO between 185 and 270 nm and a comparison of the OH(A-X) fluorescence intensities excited in the 193-nm photolyses of nitric and nitrous acids are also reported.