Time resolved optical diagnostic methods for electric gun systems

A digital spectrometer system for the analysis of arc-discharge plasmas is presented. The method of time-resolved optical spectroscopy is used. The spectroscopic system consists of a grating monochromator and an optimal multichannel analyzer. The time resolution is made possible by sweeping an optical spectrum across the cathode area of an enhanced vidicon tube. A time resolution of about 50 mu s is obtained. A theoretical method for the evaluation of the plasma temperature is discussed.<
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