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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

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ISSN Druckformat: 1093-3611

ISSN Online: 1940-4360

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Radial and axial distributions of the electron density and temperature in a cascade arc plasma

Volumen 10, Ausgabe 1, 2006, pp. 33-38
DOI: 10.1615/HighTempMatProc.v10.i1.30
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ABSTRAKT

Plasmas produced with cascade arcs at atmospheric pressure are supposedly in a state of local thermal equilibrium, or close to it. If we exclude near-electrode regions, the arc can be described as being cylindrically symmetric. In one-component plasmas, the uniformity of the plasma column along the arc axis can also be assumed. In many-component plasmas, due to the demixing effect there are spatial nonuniformities in the plasma composition. Gradients of plasma composition are connected with the gradients in other plasma parameters -temperature and electron density.
In the experiment described in this paper, the plasma gas consisted mainly of helium, with additions of argon. Registration of the spectrum was performed in a side-on configuration, measuring the light emitted by the plasma between arc segments, emerging through slits in the separating insulating rings. The electron density profiles were calculated from measured Hα linewidths.

REFERENZIERT VON
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  4. Wei G. D., Qi X., Yang L., Modelling on dynamics properties of a stationary argon cascaded arc plasma flows, Physics of Plasmas, 21, 3, 2014. Crossref

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