 |
 |
 |
|||||||||||||
 |
|||||||||||||||
 |
|||||||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
||||||
 |
 |
||||||||||||||
 |
|||||||||||||||
 |
 |
||||||||||||||
 |
 |
||||||||||||||
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
FLAT GRADED MULTILAYERS
Flat graded multilayers are artificial optical components with a 1-dimensional lattice deposited on a substrate.
These optical devices monochromize the incoming beam while leaving the divergence unchanged, i. e. they generate a divergent monochromatic beam. To obtain high efficiency, the d-spacing of the lattice has to be changed from the front end to the rear end of the multilayer. A plane figure is rquired for this type of mirror. The device has a single focal point. Either the X-ray source or the detector (or detector slit) may be placed at the optics focal distance, for primary or secondary side applications, respectively.
Spectral lines Cr, Co, Cu, Mo, Ag
This multilayer can be used for different wavelengths.
Mean reflectivity R > 70 %
Monochromasy Ka1 + Ka2
Mirror length L = 20 mm ... L = 80 mm (on customers request)
X-ray source geometry line focus preferred
Capture angle j = 0.20 (L = 20 mm) ... j = 0.50 (L = 80 mm / Cu Ka)
Application monochromator (primary or secondary) in Bragg-Brentano Geometry
Flat graded multilayers: Generation of a monochromatic 1-dimensional divergent beam
Beam path and main parameters of a flat graded multilayer
Flat Graded Multilayers