CCD images of low-pressure low-current DC discharges

Charge coupled device (CCD) images of low-current low-pressure discharges allow us to measure a wide range of data required for discharge modeling and understanding of the main physical processes. In this paper, we show axial distributions of emission obtained from CCD images. These distributions have been used to provide data on basic transport properties, uniformity of the electric field, secondary electron yield, and for verification of plasma models.