Anomalous inflow into rarefied plasma expansion

P.J.W. Vankan, D.C. Schram, R.A.H. Engeln

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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Samenvatting

In this paper the physics of deep plasma expansion in the rarefied regime is studied in the framework of fast deposition, surface modification and molecule conversion. A large plasma flow, produced in a cascade arc plasma source, expands into a low pressure background. The density, temperature and velocity evolution are studied with laser scattering and fluorescence techniques. The velocity distribution functions are measured, and can accurately be described by a bimodal distribution. This bimodal velocity distribution function is interpreted in terms of an unchanged expanding component that is gradually converted into a slower component by collisions with molecules or atoms from outside the barrelshock. These particles can enter the expansion due to the rarefied conditions.
Originele taal-2Engels
TitelProceedings of the 24th International Symposium on Rarefied Gas Dynamics, 10-16 July 2004, Bari, Italy
Pagina's361-366
DOI's
StatusGepubliceerd - 2005

Publicatie series

NaamAIP Conference Proceedings
Volume762
ISSN van geprinte versie0094-243X

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