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Electron density measurements in a laser induced Na plasma

Danny J. Krebs, L. D. Schearer

Abstract

The optical emission spectrum of a recombining Na plasma is observed. The shift and broadening of the spectral line emission due to electron collisions is observed. Electron densities on the order of 5×1014 cm−3 are calculated from the shift measurements. The results agree well with electron densities obtained in the same system from Saha plots of excited state densities.

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Key concepts: Atomic physics, Plasma, Electron density, Excited state, Electron, Emission spectrum, Electron temperature, Line (geometry)