Term: exposure
https://doi.org/10.1351/goldbook.ET02276

Definition:
For X- or gamma-radiation in air: the sum of the electrical charges of all the ions of one sign produced when all electronss liberated by photonss in a suitably small element of volume of air completely stopped, divided by the mass of the air in the volume element.

Related Terms:
1) x- (http://doi.org/10.1351/goldbook.X06703).
2) gamma-radiation (http://doi.org/10.1351/goldbook.R02568).
3) ions (http://doi.org/10.1351/goldbook.I03158).
4) electrons (http://doi.org/10.1351/goldbook.E01975).
5) photons (http://doi.org/10.1351/goldbook.P04627).

Source: PAC, 1982, 54, 1533. 'Glossary of terms used in nuclear analytical chemistry (Provisional)' on page 1541 (https://doi.org/10.1351/pac198254081533)

Citation: 'exposure' 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.ET02276

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