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Handheld
digital & Analog Radiation Detectors
Geiger counters are used to detect radiation, usually alpha and beta radiation,
but also other types of radiation as well using a a Geiger-Müller tube sensor.
Modern instruments can report
radioactivity over several orders of magnitude. Some Geiger counters can also be
used to detect gamma radiation,
A better device for detecting gamma rays is a sodium iodide
scintillation counter. Good alpha and beta scintillation counters also exist,
but Geiger detectors are still favored as general purpose alpha/beta/gamma
portable contamination and dose rate instruments, due to their low cost and
robustness. A variation of the Geiger tube is used to measure neutron.
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