Life Test Program for Internally Heated Cathode for BL-234C Magnetron

Abstract

Investigation performed on internally heated tungsten dispenser cathodes during a Production Engineering Measures program on the low field, 70 GHz, BL-234C pulsed magnetron showed promise of longer life (greater than 200 hours) and higher output power performance at one third the heater power of the conventionally designed tube. This program investigated the BL-234C through several cathode structure design changes that are herein discussed. Both physical and electrical problems with the cathode structure that included fracturing of the cathode support stem at several weak areas and deterioration in the output power over short periods of time. One tube passed 160 hours of RF life testing, and four tubes produced in excess of 800 watts output power during some period of RF investigation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1968
Accession Number
AD0776352

Entities

People

  • A. Eklund

Tags

DTIC Thesaurus Topics

  • Assembly
  • Contracts
  • Engineering
  • Frequency
  • Life Tests
  • Materials
  • Measurement
  • Power
  • Production
  • Production Engineering
  • Radio Frequency Power
  • Resistance
  • Specifications
  • Spectra
  • Standards
  • Temperature Gradients
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Metallurgy