It is not common, but Geiger counters may also be used for neutron detection. In this case, the Geiger-Mueller tube must have the inside of the tube coated with boron, or the tube must contain boron trifluoride (BF3) or helium-3 as the fill gas.
GQ GMC-SE Geiger Counter Radiation Detector Beta Gamma X-ray Portable Radiation Monitor Meter Digital Nuclear Radiation Dosimeter, Automatic Data Recording Device, Drop-Proof Silicone Case (Black): : Industrial & Scientific
Geiger Counter - an overview
When radiation is detected by a Geiger counter, an audible clicking sound is heard, which results from an electrical current being generated inside the probe. Describe how radiation generates an electrical current
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