HIGH TEMPERATURE PHOTOELECTRIC TECHNIQUES AND MATERIALS
Abstract
Photocathodes continued to be processed in dummy photomultiplier structures. Approximately 50% of these had sensitivities in the range of 16 to 45 ua/1. Some thermodynamic calculations were made regarding the rates of arrival of the different metals as used in processing these bi-alkali photocathodes. The first bi-alkali (Na-K-Sb) photomultiplier experimental tube was made and tested. With a photocathode sensitivity of approximately 30 ua/1 and six multiplying stages, over-all gains of 2780 and 1100 at 1200 and 1000 volts, respectively, between photocathode and anode, were attained. Further data was taken on later bi-alkali photocathodes under varying conditions of photocathode current loading and temperature. The greatest cause of photoresponse decay was due to a temperature rise rather than continuous current loading. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 21, 1961
- Accession Number
- AD0259114
Entities
People
- H. Shabanowitz
- V.j. Santilli
Organizations
- Westinghouse Electric Corporation