Spectroscopic characterization of a neon surface-wave sustained (2.45 GHz) discharge at atmospheric pressure

Time-resolved study of pulsed Ar–N2and Ar–N2–H2microwave surfaguide discharges using optical emission spectroscopy

“…Several important theoretical predictions were supported experimentally by the same authors [13,14]. In general, a considerable amount of research has focused on the basic applications of microwave discharges [4,5,16,17], gas temperature measurements [5,9,18], and the evaluation of atomic species production [3,19,20] is related mainly to the non-pulsed MSGDs. As a result, pulsed MSGDs remain rather unexplored, even though the study of molecular gas dissociation and time evolution of the plasma characteristic temperatures (T gas , T rot , T vibr , T e ) is of particular interest in this case.…”

Absorption spectroscopy measurements of resonant and metastable atom densities in atmospheric-pressure discharges using a low-pressure lamp as a spectral-line source and comparison with a collisional-radiative model

“…The density of metastable and resonant atoms can be determined in various ways: self-absorption [7][8][9][10][11] and absorption using the emission from a tunable diode laser [12][13][14][15][16][17][18] or the line from a spectral lamp [2,[19][20][21][22][23][24][25][26][27]. Utilizing lasers to determine the density of metastable and resonant atoms is advantageous, as it does not depend on the absorption-line spectral profile.…”

Atmospheric pressure plasma jet utilizing Ar and Ar/H 2 O mixtures and its applications to bacteria inactivation

“…Stark broadening of the H β line is one of the common tools to diagnose the plasma electron density because it depends on the electron temperature. [11,37,[40][41][42][43][44][45] Under the conditions of ∼1 atmospheric pressure and T g of 300 K to 330 K, the most important mechanisms are van der Waals broadening, due to collisions between excited hydrogen and argon atoms, and Stark broadening arising from the interaction between charged particles and excited hydrogen atoms. Both exhibit a Lorentzian profile.…”