Global Modeling of CO₂ Discharges with Aerospace Applications

Table 5

Results obtained taking into account the presence of Ar in the discharge. Conditions: p = 80 mTorr; = 250 W; = 400 K; approximate form factor L = 30 cm; = 8 cm.

Discharge case	(sccm)	(eV)	(*)	(*)	(*)	Ratio /( − )	Ratio /( − )	Ratio /( − )	Ratio /( − )	Ratio /( − )	Ratio /
Experiment [CO2] : [Ar] 60 : 40	25 (15 + 10)^†					44.4^†	44.4^†	11.1^†			35.7^†
GM CO2	15^††	1.568^††	5.49^††	4.28^††	9.77^††	38.1^††	38.7^††	17.4^††	5.1^††	0.6^††
GM CO2	25^††	1.600^††	5.21^††	5.28^††	10.49^††	48.1^††	32.7^††	14.5^††	4.4^††	0.3^††
GM Ar	25^††	1.467^††	156.9^††		156.9^††						100^††
GM [CO2] : [Ar] 60 : 40	25 (15 + 10)^††	1.537^††	8.42^††	4.41^††	12.83^††	38.8^††	37.8^††	16.1^††	6.8^††	0.6^††	33.6^††
Experiment [CO2] : [Ar] 60 : 40	25 (15 + 10)^†					41.1^†	41.1^†	10.3^†	6.8^∆	0.6^∆	34.0^†

Experimental density ratios (given in percentage) calculated from the flow of species created in the discharge measured in [3] with help of the present theoretical results.
and percentage (indicated by ∆) are evaluated assuming 7.4% of the sum of + percentages.
(*) densities in 10¹⁰ cm⁻³.