RESEARCH STUDY FOR INCREASING THE SENSITIVITY OF PHOTOEMITTERS.
Abstract
Efforts were continued on a program to investigate the physical and structural properties of photoemitting materials, to study and develop processing procedures for producing improved photocathodes, and to investigate the possibilities of field induced photoemitters. Various methods of introducing Na at 160 C during the S-20 process produced good Na2KSb cathodes but S-20 cathodes with low red response. A new S-20 process in which an oxidized Sb-base layer is used was studied. Differences were noted between Sb deposits evaporated from Sband PtSb-beads. Experimental evidence was produced to show that the stoichiometric composition of multi-alkali cathodes is critical to within 1 to 2%. Life-tests on S-20 cathodes exposed to uncesiated glass and metal parts indicate stability of this type of cathode over periods of months. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 23, 1964
- Accession Number
- AD0446738
Entities
People
- A. H. Sommer
- R. E. Simon
- W. H. Mccarroll
Organizations
- Sarnoff Corporation