Abstract
The recent discovery that a GaAs-Cs emitter surface is one of the most efficient photoemitters throughout the visible and near infrared region has stimulated hopes that this system might form the cathode of improved phototubes. A number of problems stand in the way of realizing this hope, one of which is investigated here. It has been reported that the infrared response, and to a lesser degree the visible response of the GaAs-Cs system, decays in time. An investigation into the origin and the nature of this instability is reported here, with the conclusion that the decay in sensitivity is due to an excess accumulation of Cs on the GaAs surface. The experimental investigation also includes age studies, methods of resensitization of the cathode, and the effects of an argon atmosphere.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
