Cold Cathode Ionization Gage

From ExoDictionary
Jump to: navigation, search
This definition page has been automatically generated.
You can help ExoDictionary by expanding, updating, or correcting it.


This autostub has not yet had its initial copyediting proof and may contain significant formatting and even factual errors. You can improve Exodictionary by cleaning up the page markup and verifying that the definition is correct and then removing this tag.


This autostub has not yet had its initial categorization proof and may be categorized incorrectly. You can improve Exodictionary by removing inappropriate categories and then removing this tag.


Cold Cathode Ionization Gage


A ionization gage (vacuum gage) in which the ions are produced by a discharge between two electrodes, both near room temperature. The discharge usually takes place in the presence of a magnetic field which lengthens the path of the electrons between cathode and anode.
One form of gage is a transparent tube in which the color and form of a cold-cathode discharge, without the presence of a magnetic field, give an indication of the pressure and the nature of the gas. The Philips ionization gage, or Penning gage, is a cold-cathode ionization gage in which a magnetic field is used. Various modifications of the Penning gage are named after the inventors, and certain types are referred to as magnetron vacuum gages.

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use