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Amplification factor in IOTs with island building

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

Published
Publication date20/11/2009
Host publication2009 IEEE International Vacuum Electronics Conference, IVEC 2009
PublisherIEEE
Pages175-176
Number of pages2
ISBN (Print)9781424434992
<mark>Original language</mark>English
Event2009 IEEE International Vacuum Electronics Conference, IVEC 2009 - Rome, Italy
Duration: 28/04/200930/04/2009

Conference

Conference2009 IEEE International Vacuum Electronics Conference, IVEC 2009
Country/TerritoryItaly
CityRome
Period28/04/0930/04/09

Publication series

Name2009 IEEE International Vacuum Electronics Conference, IVEC 2009

Conference

Conference2009 IEEE International Vacuum Electronics Conference, IVEC 2009
Country/TerritoryItaly
CityRome
Period28/04/0930/04/09

Abstract

In a triode type electron gun the amplification factor, μ, determines how the beam current varies with time for any given gun geometry and applied voltages. A simple triode low-μ formula has regularly been used to predict IOT behaviour however, it is incapable of addressing nonuniform cathode emission resulting from modern grid geometry and small cathode-grid distances. Consequently it is incapable of detailing meaningful emission behaviour or accurate prediction. A literature search identified few μ formulae suitable for IOT-type geometry. Results show excellent agreement between them but a significant departure from the often-used Maxwell or "low-μ" triode formula [1]. The formulae should offer the ability to more accurately predict IOT performance characteristics.