Spectral diagnostics of plasma in a cesium lamp with a pulse-periodic discharge
Bogdanov A.A.1, Stolyarov I.I.1
1Ioffe Institute, St. Petersburg, Russia
Email: a.bogdanov@mail.ioffe.ru
A detailed study of the emission spectra of a cesium lamp with a pulse-periodic discharge at relatively low pressures made it possible to determine the electron concentration both from the recombination continuum and from the broadening of the spectral lines of cesium and xenon. The concentration values obtained by the two methods are consistent. The electron temperature was determined from the spectrum of the recombination continuum, which was recorded in the visible and short-wave range (up to 290 nm), which made it possible to determine the photorecombination cross-section here. A feature of the shift of the CsI lines of the diffuse 6p-nd series (n = 7-10) was discovered. Recording the evolution of the shape of many spectral lines made it possible to draw conclusions about the behavior of the gas in a pulse and decay within the framework of a simple model. Keywords: emission spectrum, electron concentration and temperature, recombination continuum, broadening and shift of spectral lines.
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