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Geiger-Müller – Time Behavior

initial pulse rise will be somewhat slower than that for a single avalanche

net effect is that the output pulse from a G-M tube still exhibits a fast rise on the order of a microsecond or less, followed by a much slower rise due to the slow drift of the ions

from considerations of maximum counting rate, time constants are often chosen that are much less than 100 sec  which largely eliminate the slow-rising portion of the pulse and leave only the fast leading edge

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