The rotational temperature in high-enthalpy jets of atmospheric-pressure nitrogen plasma

The method of comparison of the measured and model spectra of radiation of the (0-0) and (0-1) bands of the first negative system of N-2(+) ion and zero sequent bands (Deltav = 0) of the "violet" system of CN is used to find the rotational temperature T-r in different cross sections of a high-enthalpy jet of atmospheric-pressure nitrogen plasma. Also determined in the far zone of jet relaxation is the temperature TV of population of low-lying vibrational levels of the B(2)Sigma(+) state of a CN molecule. The translational temperature of heavy particles T-m is estimated. The obtained values of the temperature T-r are compared to the axial values of the electron temperature T-e.