emittance

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emittance

[i′mit·əns]
(thermodynamics)
The power radiated per unit area of a radiating surface. Also known as emissive power; radiating power.

emittance

The ratio of radiant flux emitted by a material to that emitted by a blackbody at the same temperature, under the same conditions.
References in periodicals archive ?
A method to include the influence of the vertical electron beam emittance onto the calculability of synchrotron radiation is introduced.
The influence of the vertical electron beam emittance on the vertical distribution of synchrotron radiation has been analyzed for SURF III.