IEVref:395-01-36ID:
Language:enStatus: Standard
Term: kerma
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Symbol: K
Definition: quotient of dEtr by dm where dEtr is the sum of the initial kinetic energies of all charged ionizing particles liberated by uncharged ionizing particles in a mass dm of material

K = dEtr/dm

Note 1 to entry: The unit for kerma is gray (1 Gy = 1 J kg−1).

Note 2 to entry: Kerma is derived from “kinetic energy released per unit mass”.

Note 3 to entry: In the case where the material is air the name is air kerma.

Note 4 to entry: This entry was numbered 393-14-65 in IEC 60050-393:2003.


Publication date:2014-03
Source
Replaces:
Internal notes:2013-11-08: "ionising" replaced by "ionizing" (x2). JGO
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