TUNNEL CATHODES FOR MICROWAVE TUBES Open PDF Document Details Document Type Technical Report Publication Date Dec 01, 1962 Accession Number AD0296181 Entities People D.v. Geppert Organizations SRI International Tags Communities of Interest Advanced Electronics Energy and Power Technologies DTIC Thesaurus Topics Climate Change Compound Semiconductors Conduction Bands Current Density Dielectric Permittivity Dielectrics Emission Energy Bands Energy Levels Films Geometry Government Procurement New York Semiconductors Space Charge Thermionic Emission Work Functions