Because of the very important role of oxygen plasmas in Various application
s, both direct current and microwave discharges have been analysed from the
point of view of emission spectra properties. In both cases silica dischar
ge tubes with practically the same diameters were used. The following trans
itions of the oxygen discharges were studied: the atomic lines at 777.4 nm
(P-5 - S-5) and 747.1 nm (D-3 - P-3(0)), and the head at 759.4 nm of the at
mospheric system (b (1)Sigma (+)(g), v = 0 - X (3)Sigma (-)(g), v = 0).