proportional counter

https://doi.org/10.1351/goldbook.P04885
A gas-filled X-ray detector in which the electric potential is high enough for the gain to reach a value in the range from 102 to 105. Each electron produced by the initial photo-ionization causes one avalanche. Since the number of avalanche events is proportional to the energy of the incident photons, the charge collected by the anode is proportional to the X-ray photon energy.
Source:
PAC, 1995, 67, 1745. (Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)) on page 1754 [Terms] [Paper]
Citation: 'proportional counter' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.P04885 RIS BibTex EndNote
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