ON THE REFLECTION ON TRANSPARENT PHOTOCATHODES
关于透明光阴極的反射

For the investigation of the reflection on transparent photocathodes we worked out a comparative method. By this method the absolute values of the common reflection coefficient of photocathode and glass envelope could be determined. Investigating a generally used type of photomultiplier (type RCA-5819) we found it to show a comparatively high reflection-50 per cent-in the maximum of sensitivity.