coulomb per kilogram

Name

Symbol

Quantity

Expressed in terms of SI base units

C/kg

exposure
(x- and γ-rays)

kg⁻¹ s A

The coulomb per kilogram, symbol C/kg, is the SI coherent derived unit of exposure to x-rays or γ-rays (gamma rays).

One coulomb per kilogram is the amount of ionising radiation exposure that frees one coulomb of electric charge in one kilogram of air.

Name	Symbol	Quantity	Expressed in terms of SI base units	Expressed in terms of other SI units
becquerel	Bq	activity referred to a radionuclide	s^-1	1/s
coulomb per kilogram	C/kg	exposure (x- and γ-rays)	kg⁻¹ s A	C/kg
gray	Gy	absorbed dose	m² s^-2	J/kg
sievert	Sv	dose equivalent	m² s^-2	J/kg
gray per second	Gy/s	absorbed dose rate	m² s⁻³	W/kg