Life Tests of Tungsten and Tantalum Filaments in Ion Gauges,

Abstract

This paper presents the results of an investigation carried on for the following purposes: (1) To determine the relative life of filaments when operated at low emission (low temperatures) as compared to those operated at high emission values. (2) To determine the nature of the dependence of life upon the initial diameter of the filament. (3) To determine the effect of varying concentrations of water vapor and air upon the life of the filaments. (4) To determine the relative life characteristics of tantalum as compared to tungsten.

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Document Details

Document Type
Technical Report
Publication Date
Jan 08, 1944
Accession Number
ADA322452

Entities

People

  • W. E. Bush

Organizations

  • Oak Ridge National Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atmospheres
  • Calibration
  • Diameters
  • Emission
  • Filaments
  • Gages
  • High Vacuum
  • Ionization Gages
  • Life Tests
  • Low Temperature
  • Measurement
  • Tantalum
  • Tungsten
  • United States
  • Vapor Pressure
  • Vapors
  • Water Vapor

Fields of Study

  • Physics

Readers

  • Materials Science
  • Plasma Physics.