This paper studies a modified photographic cell with symmetricalshort gaps between a high-resistivity detector plate and two planarelectrodes. The photographic system with a modified cell is designedto optimize the parameters for the enhancement of the resolution insuch applications. The spatial stabilization of the current in themodified cell with a planar GaAs photodetector is studied in a widerange of gas pressure values at 101- 342 Torr. Characteristics of thephotographic system are obtained both without and with illuminationof the detector plate with light of a particular wavelength rangeused to control the photoconductivity of the material. The currentvoltage charac- teristic (CVC) and the photographic cell response arerecorded.
展开▼
