7264

Fourteen-stage, head-on, spherical-faceplate type having S-11 response. Wavelength of maximum spectral response is 4400 +/- 500 angstroms. Makes use of silver-magnesium dynodes and a spherical-circular, cesium-antimony, semi-transparent photocathode. (May also be ordered with copper-beryllium dynodes). Window material is Corning No. 0080 lime glass or equivalent. Has a non-hygroscopic base. Cathode with short time-resolution capability. 20 pin base.