GAS TEMPERATURE CORRECTIONS IN ENCLOSED IONIZATION GAUGES.

Abstract

The errors in the measurement of low pressures in vacuum systems with ionization gauges is significant over large temperature ranges. It is shown that the errors can be large even if sorption, desorption, condensation, and evaporation are neglected. The gauge concentration sensitivity (based upon molecular concentration or number density in the gauge) is the only 'true constant.' Sensitivities based upon pressure are temperature dependent. Relationships for temperature corrections to enclosed ionization gauges are derived and examples are tabulated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1966
Accession Number
AD0488191

Entities

People

  • Eugene N. Borson

Organizations

  • The Aerospace Corporation

Tags

DTIC Thesaurus Topics

  • Condensation
  • Critical Temperature
  • Desorption
  • Evaporation
  • Glass Transition Temperature
  • Ionization
  • Isothermal Processes
  • Lepidoptera
  • Measurement
  • Phase Transformations
  • Pressure Measurement
  • Sensitivity
  • Sorption
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Plasma Physics.
  • Thermal Physics or Thermal Science.