in nuclear chemistry
For @[email protected] or @[email protected] in air: the sum of the electrical charges of all the @[email protected] of one sign produced when all @[email protected] liberated by @[email protected] in a suitably small element of volume of air completely stopped, divided by the mass of the air in the volume element.
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1541 [Terms] [Paper]
This definition replaces an earlier definition of exposure.