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<p>such as those used as <a href="page.php?w=gaseous_ionization_detector">gaseous ionisation detectors</a>, magnitudes of currents flowing during this process can range from about 10<sup>&minus;18</sup> to 10<sup>&minus;5</sup> amperes.</p>

<p><big>Quantitative description</big></p>
<p>Townsend's early experimental apparatus consisted of planar parallel plates forming two sides of a chamber filled with a <a href="page.php?w=gas">gas</a>. A <a href="page.php?w=direct_current">direct-current</a> high-<a href="page.php?w=voltage_source">voltage source</a> was</p><p>
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