Study of the NH2 radicals produced by flash photolysis of NH3

The absorption spectra of the NH 2 radical have been recorded with a resolution of 10 -3 cm -1 in the 1343 - 1605 cm -1 range. The formation of the radicals took place as a result of pulsed photolysis of NH 3 in the 190 - 220 nm region. The total number of NH 2 radicals formed was 10 17 - 10 18 for a 5 microsecond(s) ec duration of the photolyzing pulse and a 250 J energy supplied to the photolysis lamp. Nineteen lines of vibrational-rotational transitions with N -4 cm -1 .