Why is the central electrode in a G.M. tube positive?

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The central electrode in a Geiger-Muller tube is always positive to ensure that electrons are attracted towards it, facilitating effective charge multiplication. If the electrode were negative, electrons would move outward where the electric field strength is insufficient for this process. This design maximizes the efficiency of detecting ionizing radiation. The positive charge creates a strong electric field that enhances the likelihood of secondary ionization events. Understanding this principle is crucial for the proper functioning of Geiger-Muller tubes in radiation detection.
Charles W
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Why is the central electrode in a Geiger-Muller tube always positive (and not negative)?

Many thanks!
 
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If it would be negative, your electrons would move outwards where the field strength is too low to get charge multiplication.
 
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Thank you very much! I understand now :)
 

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