Abstract
Optical absorption spectroscopy has been applied to measure the abs. population densities of the first excited states levels of at. hydrogen H*(n = 2) and argon Ar*(4s) in an expanding cascaded arc plasma in a hydrogen-argon mixt. It is demonstrated that the method allows us to det. both H*(n = 2) and Ar*(4s) abs. d. radial profiles for H2 admixts. in Ar ranging from 0.7 to 10% with good accuracy. It has been shown that the d. of hydrogen excited atoms H*(n = 2) serves as an indicator of the presence of argon ions and hydrogen mols. in the expanding plasma. A kinetic model is used to understand evolution of H*(n = 2) d. in the expansion, and to est. the total at. hydrogen population d. and hydrogen dissocn. degree in sub- and supersonic regions of the plasma. [on SciFinder (R)]
Original language | English |
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Title of host publication | Heat and Mass Transfer Under Plasma Conditions : proceedings of the International Symposium on Heat and Mass Transfer Under Plasma Conditions, 1st, Cesme, Turk., July 4-8, 1994 |
Editors | P. Fauchasi |
Place of Publication | New York |
Publisher | Begell House Inc. |
Pages | 135-142 |
ISBN (Print) | 1-567-00035-5 |
Publication status | Published - 1995 |
Event | International symposium on Heat and Mass Transfer under Plasma Conditions - Cesme, Turkey Duration: 4 Jul 1994 → 8 Jul 1994 |
Conference
Conference | International symposium on Heat and Mass Transfer under Plasma Conditions |
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Country/Territory | Turkey |
City | Cesme |
Period | 4/07/94 → 8/07/94 |