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Geiger-Müller – Quenching

more common to prevent possibility of multiple pulsing through internal quenching – accomplished by adding a second component called the quench gas to the primary fill gas

chosen to have a lower ionization potential and a more complex molecular structure than the primary gas component and is present with a typical concentration of 5 –10%

many organic molecules possess the proper characteristics to serve as a quench gas

ethyl alcohol and ethyl formate are widely used in many commercial G-M tubes

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