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Geiger-Müller – Counting Plateau

operating point is normally chosen by recording a plateau curve from the system under conditions in a radiation source generates events at a constant rate  within the tube

distributions are shown for 2 hypothetical values of applied voltage in the sketch

minimum voltage at which pulses are first registered counting system is often called starting voltage

transition between the rapid rise of the curve and plateau is its knee

if voltage raised is sufficiently high, plateau abruptly because of the onset of continuous discharge mechanisms within the tube

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