Kerma, K

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The quotient of the sum of the kinetic energies, dEtr, of all charged particles liberated by uncharged particles in a mass dm of material, and the mass dm of that material.

K = dEtr/dm

The unit for kerma is joule per kilogram (J kg-1) and its special name is gray (Gy).

See also H*(10), Exposure, Hx, Kerma, K

Source: ICRP Publication 103

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