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Brugeat S. Coitout H. 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2004,28(1):101-107
The electron density is measured in an argon-CO2 thermal plasma by optical emission spectroscopy. Electron density is deduced from the Stark broadening of the argon line and hydrogen (H
) line. Different theories are used and compared. The effect of CO2 molecule upon this plasma is studied as a function of the Ar-CO2 mixture composition and discharge current. The electron density is ranging from 3 x 1021 m-3 to 5.6 x 1022 m-3. The influence of the arc confinement is studied and the electron density gradients are evaluated. Departure from local thermal equilibrium is also discussed.Received: 5 September 2003, Published online: 21 October 2003PACS:
52.70.Kz Optical (ultraviolet, visible, infrared) measurements - 52.80.Mg Arcs; sparks; lightning; atmospheric electricity 相似文献
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The measurement of temperature of heavy particles in a thermal plasma is based on the comparison of experimental rotational spectrum obtained by optical emission Spectroscopy and synthetic spectra calculated for different temperatures. The calculation principle of the synthetic spectra is detailed as well as the temperature accuracy obtained. This method is used to measure the temperature of an Ar-CO2 mixture plasma produced in a wall stabilized arc with molecular spectra of C2 (Swan system) and CN (violet system). 相似文献
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