Figure 6
Current-saturation curves for 10 keV X-rays in two IC1 chambers placed before and after the chopper. The rotating speed was 181 Hz and the slit size was 0.36 mm; as a result, the window-opening period was 11.5 µs. The low-current data with chopping were obtained through the 0.1 mm slit. Both the current (top) and collection efficiency f (bottom) are shown as a function of the applied electric field.  [article HTML]