Microwave air plasmas in capillaries at low pressure I. Self-consistent modeling

Power Transfer to Gas Heating in Pure N2 and in N2–O2 Plasmas

“…Furthermore, since the calculations carried out in that work for a post-discharge situation indicate that the time-dependent kinetics of the electronically excited states of molecular nitrogen N 2 (A, B, C), as well as that the atomic states N­( 4 S, 2 D, 2 P) are similar, we expect a reliable temporal description of these species and of their contribution to gas heating. Nonetheless, it is worth mentioning that work is underway to couple the dynamics of gas heating with the more detailed description of vibrational kinetics for N 2 and O 2 reported recently by Coche et al…”

Zero-dimensional and pseudo-one-dimensional models of atmospheric-pressure plasma jets in binary and ternary mixtures of oxygen and nitrogen with helium background

“…The synergistic role of the whole vibrational chemical kinetics (i.e., e-V, V-V and V-T reactions) is important for the profile at low quantum numbers, whereas the V-T mechanism is more influential on the intermediate and high vibrational levels. A Maxwellian-like distribution function at low and intermediate vibrational quanta is obtained for nitrogen molecules, similar to those at lowpressure [30,118,119]. The tail of the distribution function is slightly elevated except at a high power of 2.0 W. The vibrational population is initially driven by e-V energy transfer, however the quasi-steady distribution function is mainly shaped by the V-V collisions.…”

N2–H2 capacitively coupled radio-frequency discharges at low pressure: II. Modeling results: the relevance of plasma-surface interaction

“…v5 V-T N2(X,v) + H2 → N2(X,w) + H2 [52] v6 V-T N2(X,v) + N → N2(X,w) + N [52] v7 V-T N2(X,v) + H → N2(X,w) + H [52] v8 V-V N2(X,v) + H2(X,w) ↔ N2(X,v+1) + H2(X,w-1) [52] v9 V-V N2(X,v) + H2(X,w) ↔ N2(X,v+2) + H2(X,w-1) [52] v10 e-V e + H2(X,v) ↔ e + H2(X,v+i) ; v=0-13 ; i=1-3 [66] v11 V-T H2(X,v) + H2 → H2(X,w) + H2 [61] v12 V-T H2(X,v) + H → H2(X,w) + H [52] v13 V-V H2(X,v) + H2(X,w) ↔ H2(X,v+1) + H2(X,w-1) [61] v14 H2(X,v) + wall → H2(X,v-1) [61] v15 E-V e + H2(X,v) → e + H2(B,C) → e + H2(X,w) [61,66] Electron impact processes n20 N(D) + N2 → N(S) + N2 1.0×10 -13 exp(-510/Tg) [60] n21 N(P) + N2 → N(S) + N2 6.0×10 -14 [60] n22 N(P) + N2(X,v≥10) → N(S) + N2(A) 1.0×10 -10 exp(-1300/Tg) [60] n23 N(P) + N(S) → N(S) + N(S) 1.2×10 -12 [60] n24 N(P) + N(S) → N(S) + N(D) 6.0×10 -13 [60] Penning ionization Rate coefficient n26 N2(A) + N2(a') → N4 + + e 0.5×1.0×10 -11 [60] n27 N2(A) + N2(a') → N2(X,0) + N2 + + e 0.5×1.0×10 -11 [60] n28 N2(a') + N2(a') → N4 + + e 0.5×5.0×10 -11 [60] n29 N2(a') + N2(a') → N2(X,0) + N2 + + e 0.5×5.0×10 -11 [60] n30 N(D) + N(P) → N2 + + e 1.0×10 -13 [60] n31 N2(a') + N(P) → N3 + + e 10 -11 [71] Neutral-neutral reactions Rate coefficient n32 N(S) + NH → N2(X) + H 5.0×10 -11 [52] n33 N(S) + NH2 → N2(X) + 2H n44 H + NH → N(S) + H2(X) 5.4×10 -11 exp(-165/Tg) [52] n45 H + NH2 → H2(X) + NH 6.6×10 -11 exp(-1840/Tg) [52] n46 H + NH2 + M → NH3 + M 5.5×10 -30 [52] n47 H + NH3 → H2(X) + NH2 8.4×10 -14 exp(-4760/Tg) (Tg/300) 4.1 [52] n48 NH + NH → N2(X) + H2(X) 5.0×10 -14 (Tg/300) 0.5 [52] n49 NH + NH → N(S) + NH2 1.7×10 -12 (Tg/300) Ion-ion recombination Rate coefficien t ii1 H -+ H + → 2H 8.73×10 -9 (300/Tg) 0.5 [99] ii2 H -+ H2 + → H2 + H 2.91×10 -9 (300/Tg) 0.5 [99] ii3 H -+ H3 + → 2H2 2.0×10 -7 (300/Tg) 0.5…”

“…n2 N2(A) + N2(A) → N2(B) + N2(X,0) 7.7×10 -11 [60] n3 N2(A) + N2(A) → N2(C) + N2(X,0) 1.50×10 -10 [60] n4 N2(A) + N2(X,5≤v≤14) → N2(B) + N2(X,0) 2.0×10 -11 [60] n5 N2(A) + N2(X,14≤v≤19) → N2(X,0) + N(S) + N(S) 1.5×10 -12 [60] n6 N2(A) + N(S) → N2(X,6≤v≤9) + N(P) 4.0×10 -11 [60] n7 N2(A) + H → N2(X,0) + H 5.0×10 -11 [52] n8 N2(A) + H2 → N2(X) + 2H 2.0×10 -10 ×exp(-3500/Tg) [52] n9 N2(A) + NH3 → N2(X,0) + NH3 1.6×10 -10 [52] n10 N2(B) + N2 → N2(A) + N2 0.95×3.0×10 -11 [60] n11 N2(B) + N2 → N2(X,0) + N2 0.05×3.0×10 -11 [60] n12 N2(B) + H2 → N2(A) + H2 2.5×10 -11 [52] n13 N2(a') + N2 → N2(B) + N2 1.90×10 -13 [60] n14 N2(a') + H → N2(X,0) + H 1.5×10 -11 [52] n15 N2(a') + H2(X) → N2(X) + 2H 2.6×10 -11 [52] n16 N2(a) + N2 → N2(a') + N2 2.0×10 -11 [60] n17 N2(w) + N2 → N2(a) + N2 1.0×10 -11 [60] n18 N2(a'') + N2 → products 2.3×10 -10 [60] n19 N(S) + N(S) + N2 → N2(B) + N2 8.27×10 -34 exp(500/Tg) [60] n20 N(D) + N2 → N(S) + N2 1.0×10 -13 exp(-510/Tg) [60] n21 N(P) + N2 → N(S) + N2 6.0×10 -14 [60] n22 N(P) + N2(X,v≥10) → N(S) + N2(A) 1.0×10 -10 exp(-1300/Tg) [60] Penning ionization Rate coefficient n26 N2(A) + N2(a') → N4 + + e 0.5×1.0×10 -11 [60] n27 N2(A) + N2(a') → N2(X,0) + N2 + + e 0.5×1.0×10 -11 [60] n28 N2(a') + N2(a') → N4 + + e 0.5×5.0×10 -11 [60] n29 N2(a') + N2(a') → N2(X,0) + N2 + + e 0.5×5.0×10 -11 [60] n30 N(D) + N(P) → N2 + + e 1.0×10 -13 [60] n31 N2(a') + N(P) → N3 + + e 10 -11 [71] Neutral-neutral reactions Rate coefficient n32 N(S) + NH → N2(X) + H 5.0×10 -11 [52] n33 N(S) + NH2 → N2(X) + 2H 1.2×10 -10 [52] n34 N(S) + H2(X,v) → H + NH f(v,Tg) [52] n35 N(D) + H2(X) → H + NH 2.3×10 -12 [52] n36 N(D) + NH3 → NH2 + NH 1.1×10 -10 [52]…”

“…In the case of the e-V processes in N2, the IST-Lisbon database contains only the cross sections for the excitation from the ground-state to the first 10 vibrational levels. The rate coefficients for v ≥ 1 are calculated from the former using the same scaling law as in [71]:…”