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Activity median aerodynamic diameter

483 bytes added, 18:29, 12 August 2021
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[[File:Glossary Icon-2.png|100px|frameless|right|link=ICRP Glossary]]
A value of aerodynamic diameter (d<sub>ae</sub>) such that 50% of the activity in the aerosol is associated with particles of aerodynamic diameter greater than the AMAD. The AMAD is used when deposition depends principally on inertial impaction and sedimentation, typically when d<sub>ae</sub> is more than about 0.3 μm.

(adapted from [[ICRP Publication 130]], 2015)

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