Ionization Chamber

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Ionization Chamber

</dt>
An apparatus used to study the production of small ions in the atmosphere by cosmic ray and radioactive bombardment of air molecules. </dd>
The chamber is an airtight container usually cylindrical in shape and 25 to 50 liters in volume. An insulated electrode is centrally located in the chamber. In operation a potential is applied between the electrode and the chamber wall. The ions produced in the chamber are collected by the electrode system and measured by an electrometer. [[/a>|/a> ]]

References

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