Atomic hydrogen level populations and hydrogen dissociation degree in an expanding thermal plasma

D.K. Otorbaev, A.J.M. Buuron, N.T. Guerassimov, J.W.A.M. Gielen, M.C.M. Sanden, van de, D.C. Schram

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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 languageEnglish
Title of host publicationHeat 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
EditorsP. Fauchasi
Place of PublicationNew York
PublisherBegell House Inc.
Pages135-142
ISBN (Print)1-567-00035-5
Publication statusPublished - 1995
EventInternational symposium on Heat and Mass Transfer under Plasma Conditions - Cesme, Turkey
Duration: 4 Jul 19948 Jul 1994

Conference

ConferenceInternational symposium on Heat and Mass Transfer under Plasma Conditions
CountryTurkey
CityCesme
Period4/07/948/07/94

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    Otorbaev, D. K., Buuron, A. J. M., Guerassimov, N. T., Gielen, J. W. A. M., Sanden, van de, M. C. M., & Schram, D. C. (1995). Atomic hydrogen level populations and hydrogen dissociation degree in an expanding thermal plasma. In P. Fauchasi (Ed.), 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 (pp. 135-142). Begell House Inc..