A "two-piece" bench-type Geiger–Müller counter using a cylindrical end-window detector connected to an electronics module with analogue readout
Other names
Geiger Counter
Inventor
Hans Geiger, Walther Müller
Related items
Geiger–Müller tube
The sound of a geiger counter
A Geiger counter (/ˈɡaɪɡər/, GY-gər;[1] also known as a Geiger–Müller counter or G-M counter) is an electronic instrument used for detecting and measuring ionizing radiation. It is widely used in applications such as radiation dosimetry, radiological protection, experimental physics and the nuclear industry.
It detects ionizing radiation such as alpha particles, beta particles, and gamma rays using the ionization effect produced in a Geiger–Müller tube, which gives its name to the instrument.[2] In wide and prominent use as a hand-held radiation survey instrument, it is perhaps one of the world's best-known radiation detection instruments.
The original detection principle was realized in 1908 at the University of Manchester,[3] but it was not until the development of the Geiger–Müller tube in 1928 that the Geiger counter could be produced as a practical instrument. Since then, it has been very popular due to its robust sensing element and relatively low cost. However, there are limitations in measuring high radiation rates and the energy of incident radiation.[4]
^"Geiger counter | Pronunciation in English".
^Cite error: The named reference cent was invoked but never defined (see the help page).
^E. Rutherford and H. Geiger (1908) "An electrical method of counting the number of α particles from radioactive substances," Proceedings of the Royal Society (London), Series A, vol. 81, no. 546, pages 141–161.
^Cite error: The named reference knoll was invoked but never defined (see the help page).
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