Brightness
From Online Dictionary of Crystallography
Revision as of 14:02, 26 September 2017 by GervaisChapuis (talk | contribs)
Revision as of 14:02, 26 September 2017 by GervaisChapuis (talk | contribs)
Luminositél (Fr).
Brightness is defined as the flux per unit of solid angle of the radiation cone. It takes thus the beam divergence into account. The unit is p.p.s. [math]\times[/math]mra2. Brightness is an appropriate parameter to use when comparing two X-ray sources with identical focal spot size, as the definition does not contain a unit area.