The results of studies of atmospheric radiation in air at the atmospheric and lower pressure of the discharge gap formed by the coaxially arranged tubular ends of the electrodes along the jet axis will expire the treated medium. It is found that excitation of the discharge tube with nanosecond duration inside the water jet, modes can be implemented, which provide selective excitation and emission of individual atoms and molecules, formed from water and air. We study the modes of production, excitation, and emission of spectra of atoms and molecules of nitrogen, hydrogen, nitrogen oxide, and OH in water-air mixture in range 200-1100 nm with a spectral resolution from 0.03 to 1 nm.
the water, the air, discharge impulse