Modeling Chemical Composition for an Atmospheric Pressure DC Discharge in Air with Water Cathode by 0-D model

Physical Parameters and Chemical Composition of a Nitrogen DC Discharge with Water Cathode

“…The N 2 vibrational temperatures obtained in [4,13] for air plasma of atmospheric pressure were 1000 K less than in given study. Calculations showed that the temperature decrease is not connected with the presence of O 2 molecules because the rate constants of V-T exchange for N 2 -N 2 and N 2 -O 2 collisions are close.…”

“…The main species forming in a discharge were OH, H 2 O 2 , NO, and N 2 A 3 R þ u À Á molecules. For the same discharge current the concentrations of these species in air were essentially more [13]. Thus, OH, H 2 O 2 , NO concentrations for N 2 discharge were *1910 14 , 8.9 9 10 12 , and 1.8 9 10 12 cm -3 , respectively, whereas for air discharge -3 9 10 14 , 2.7 9 10 14 , and 7 9 10 16 cm -3 , respectively.…”

“…The detailed processes list is given in study [13]. The level rate constants were calculated applying SSH (Schwartz-Slawsky-Herzfeld) generalized theory [24].…”

“…). This set was already used by us for the modeling of an atmospheric pressure DC discharge in air [13]. The list of processes and data on the rate constants is given in the same study.…”

“…Probably, for plasmas containing noble gases presumably it is not too important. But the modeling of atmospheric pressure DC discharge in air [13] and experimental data [14,15] showed that effective vibrational temperatures (*5000 K) of N 2 are essentially more than translation ones (*1500 K). Therefore, vibrationally excited molecules (VEM) can influence strongly the electron energy function distribution (EEDF) over super elastic collisions.…”