Open AccessTheoretical consideration of an X‐ray Bragg‐reflection lens using the eikonal approximation
Author(s) -
Balyan Minas K.
Publication year - 2014
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577514010534
Subject(s) - eikonal equation , optics , physics , bragg's law , eikonal approximation , focus (optics) , lens (geology) , synchrotron radiation , monochromatic color , reflection (computer programming) , synchrotron , diffraction , scattering , quantum mechanics , computer science , programming language
On the basis of the eikonal approximation, X‐ray Bragg‐case focusing by a perfect crystal with parabolic‐shaped entrance surface is considered theoretically. Expressions for focal distances, intensity gain and distribution around the focus spot as well as for the focus spot sizes are obtained. The condition of point focusing is presented. The experiment can be performed using X‐ray synchrotron radiation sources (particularly free‐electron lasers).