Title :
Multi-Alkali Photo Cathodes
Author :
Sommer, Alfred H.
Author_Institution :
RCA Laboratories, Princeton, N. J.
Abstract :
The quantum efficiency of a photoemitting material is determined by a combination of physical properties. It has been found that the requirements are met best by semiconductors of low work function surfaces. In the light of these general considerations, a short survey is given of the photocathodes available heretofore. A more detailed description will then be given of the new multi-alkali cathodes, particularly those of the composition of Sb-K-Na and Sb-K-Na-Cs. Their advantages for use in scintillation counters are discussed.
Keywords :
Cathodes; Computer displays; Costs; Delay lines; Electrons; Magnetic analysis; Photoelectricity; Pulse amplifiers; Scintillation counters; Semiconductor materials;
Journal_Title :
Nuclear Science, IRE Transactions on
DOI :
10.1109/TNS2.1956.4315540
