Accession Number : AD0477679


Title :   HIGH-POWER MICROWAVE TUBE WINDOW INVESTIGATIONS


Descriptive Note : Final rept. 15 Sep 1964-14 Sep 1965


Corporate Author : SPERRY RAND CORP GAINESVILLE FL SPERRY ELECTRONIC TUBE DIV


Personal Author(s) : Saharian, A ; Kiefer, A ; Lally, P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/477679.pdf


Report Date : Sep 1965


Pagination or Media Count : 269


Abstract : This report gives a brief description of high-power microwave tube window problems. The emphasis in the discussion is placed on problems associated with the single-surface multipactor phenomenon. Window coating criteria and means of eliminating multipactor and multipactor-related problems are presented. Sputtering equipment and new coating and control procedures developed in this program are described in greater detail. Problems associated with the changes in the resistivities of coatings, including the effects of tube processing techniques, are discussed. Work performed on coating identification and problems associated with producing a uniform coating are described. Results of some thirty-seven experiments performed in this program are presented. Physical changes in window materials arising from multipactor are described. A new improved metalizing-window-brazing technique, which produces a strong metal-to- dielectric bond with thin metalizing layer and a minimum of penetration of metalizing constituents into the dielectric, is given, and pertinent fabrication procedures described.


Descriptors :   *COATINGS , *WAVEGUIDE WINDOWS , CARBIDES , DIELECTRIC PROPERTIES , NITRIDES , PROCESSING , S BAND , SPUTTERING , STABILITY , TANTALUM COMPOUNDS , TITANIUM COMPOUNDS , VANADIUM COMPOUNDS , X BAND


Subject Categories : Electrical and Electronic Equipment
      Coatings, Colorants and Finishes


Distribution Statement : APPROVED FOR PUBLIC RELEASE