Ion Counter
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Ion Counter
</dt>
An apparatus which counts the number of unit charges of electricity which
are contained in a sampled volume of the atmosphere. See aspiration
condenser, Ebert ion
counter. Compare ionization
chamber.
</dd>
The design of the ion counter depends upon the mobility of the ions
under investigation. The general procedure is to pass a sample of the
atmosphere through a charged cylindrical condenser. The type of ions collected
will depend upon the capacity of the condenser and the polarizing potential.
The change in the potential drop across the condenser is a measure of the
ionic charge collected. [[/a>|/a>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use