Influence of carbon dioxide on the radial temperature distribution in an argon arc

Authors
Citation
E. Maouhoub, Influence of carbon dioxide on the radial temperature distribution in an argon arc, J PLASMA PH, 63, 2000, pp. 97-114
Citations number
32
Categorie Soggetti
Physics
Journal title
JOURNAL OF PLASMA PHYSICS
ISSN journal
00223778 → ACNP
Volume
63
Year of publication
2000
Part
2
Pages
97 - 114
Database
ISI
SICI code
0022-3778(200002)63:<97:IOCDOT>2.0.ZU;2-S
Abstract
The temperature profiles in wall-stabilized atmospheric-pressure arcs in pu re argon and in argon-carbon dioxide mixtures have been obtained at current s of 5-40 A and for molar percentages of CO2 ranging from 0.9 % to 25 % usi ng spectroscopic techniques. With the addition of CO2 to a pure-Ar are, we show the formation of a core of higher temperatures with a larger gradient of the radial temperature distribution at the are centre. These investigati ons show that the addition of even a few percent of CO2 to Ar has a marked effect both upon extinction of the are according to current values and upon the temperature profiles. Few measurements have been done in Ar-CO2 mixtur es in a wall-stabilized are.