IEVref: 395-01-43 ID: Language: en Status: Standard Term: exposure rate coefficient Synonym1: Synonym2: Synonym3: Symbol: Γ Definition: for a photon emitter, the product of the exposure rate $\stackrel{˙}{X}$, at a given distance l from a point radiation source of that emitter and the square of that distance divided by the activity A of the radiation source neglecting attenuation $\Gamma =\stackrel{˙}{X}\left({l}^{2}/A\right)$ Note 1 to entry: This entry was numbered 393-14-82 in IEC 60050-393:2003. Publication date: 2014-03 Source: Replaces: Internal notes: 2014-02-21: X with a dot added to the definition and the equation. Source of correction = ja mail 2013-12-02. Committee never replied but ja correction in line with original CDV file received; omission of X with a dot clearly an error. JGO CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: