Actions

Brightness

From Online Dictionary of Crystallography

Revision as of 13:56, 26 September 2017 by GervaisChapuis (talk | contribs)

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<\sup>. 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.