Global Modeling of CO₂ Discharges with Aerospace Applications

Table 2

Reactions involving CO₂, , CO, and CO⁺ species considered in the CO₂/CO plasma kinetics.

Number	Process		Description	Source for the cross section/rate coefficient
1	CO2 + e^− → + 2e^−	(I)	CO2 ionization	f in [16]
2	CO2() + e^−↔ CO2() + e^−	(II)	CO2 vib. (de-)excitation	a, b, c in [16], see Table 1
3	CO2 + e^− → O^+ + CO + 2e^−		CO2 dissociative ionization	f in [16]
4	CO2 + e^− → CO^+ + O + 2e^−		CO2 dissociative ionization	f in [16]
5	wall → CO2		wall recombination	Formula (4), from [22]
6	CO2 + e^− → CO + O(^1D) + e^−	(III)	CO2 dissociation	g in [16]
7	CO2 + e^− → CO + O(^3P) + e^−		CO2 dissociation	Evaluation, present work
8	CO2 + e^− → CO + O^−	(IV)	CO2 dissociative attachment	h in [16]
9	+ O^− → CO2 + O		recombination with O^−	Evaluation, present work
10	+ e^− → CO + O	(V)	diss. recombination	i in [4]
11	CO + e^− → CO^+ + 2e^−		CO ionization	[17]
12	CO + e^− → C^+ + O + 2e^−		CO dissociative ionization	[17]
13	CO + e^− → C + O^+ + 2e^−		CO dissociative ionization	[17]
14	CO + e^− → C + O^− + e^−		CO dissociative attachment	[17]
15	wall → CO		CO^+ wall recombination	Formula (4), from [22]
16	CO^+ + e^− → C + O		diss. recombination	Evaluation, present work
17	CO^+ + O^− → CO + O		recombination with O^−	Evaluation, present work
18	CO + O(^1D) → CO + O(^3P)		O(^1D) de-excitation with CO	Evaluation, present work
19	CO2 + O(^1D) → CO + O2		CO2 dissociation with O(^1D)	j in [23]
20	CO + O(^1D) → CO2		CO2 form. from O(^1D) + CO	Evaluation, present work

f: Lindsay and Mangan [24]; g: LeClair and McConkey [25]; h: Rapp and Briglia [26] as reported in [16]; i: Seiersen et al. [27] as reported in [4]; j: Sedlacek et al. [28] as reported in [23].
(I) Ionization rates from vibrationally excited levels of CO₂, based on values for ionization from CO₂() multiplied by a factor of 1.5.
(II) Vibrational (de-)excitation for 001, 010, and 100 values.
(III) Using the rate for CO₂ dissociation leading to the O(¹S) products.
(IV) The CO₂ dissociative attachment rate from vibrationally excited levels is based on values for ionization from CO₂() multiplied by a factor of 1.5.
(V) We used rate coefficient reported in [4] divided by a factor of 3.