Radiation Protection Glossary

A radiation protection glossary for Radiation Protection Supervisors (RPS) and anyone interesting in radiation safety terminology. The glossary is a mixture of health physics terms, and phrases related to radiation legislation, transport, practical safety and similar.

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Geiger counter

A Geiger Counter (G-M Counter) is a type of detector used to measure levels of Radiation or Contamination. The counter is relatively simple to make and is quite robust so it is used regularly in the field to take quick measurements. Due to its mode of operation, the output of the Geiger Tube is independent of the incident energy or the incoming Ionisation event. Thus it is strictly a 'counter' rather than an energy spectrometer. Whilst the geiger counter will respond to Gamma Rays they are particularly suited to medium and high energy Beta Particles (e.g. C-14, S-35, P-32) and alpha emitters if fitted with a think window (e.g. Po-210, Am-241).

Education is what remains after one has forgotten what one has learned in school

– Albert Einstein