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Calibration of spatially nonuniform sensitivity for a spectral line emission measuring system

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3 Author(s)
Guoxiang Xu ; Dept. of Electr. & Comput. Eng., Clarkson Univ., Potsdam, NY, USA ; Haydon, S.C. ; Hugrass, W.N.

An apparatus for space- and time-resolved measurements of the spectral line emission from glow discharge plasmas is described. It utilizes two stages of microchannel plate image intensifiers and a computer-assisted data acquisition system. The image intensifiers have a significant level of dark noise, and their sensitivity is spatially nonuniform. The effect of the dark noise is reduced significantly by signal averaging. A calibration procedure using a movable stable source is followed so that quantitative measurements can be obtained despite the spatial nonuniformity

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Instrumentation and Measurement, IEEE Transactions on  (Volume:43 ,  Issue: 6 )