Brightness
From Online Dictionary of Crystallography
Revision as of 13:51, 26 September 2017 by GervaisChapuis (talk | contribs) (Created page with "'''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>mra^2...")
Revision as of 13:51, 26 September 2017 by GervaisChapuis (talk | contribs) (Created page with "'''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>mra^2...")
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]mra^2. 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.