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- Title
Linearly graded GeSi beam-expanding/compressing X-ray monochromator.
- Authors
Korytár, D.; Ferrari, C.; Mikulík, P.; Vagovičc, P.; Dobročka, E.; Áč, V.; Konopka, P.; Erko, A.; Abrosimov, N.
- Abstract
In standard single-crystal V-channel germanium (220) X-ray beam-expanding/ compressing monochromators for Cu Kα1 radiation, a total beam expansion/ compression of 5 and 10 corresponding to the asymmetry angles of 9 and 12° is achieved, respectively. Higher one-dimensional beam expansion/compression is achievable using larger angles of asymmetry at the expense of a decrease in the total intensity. To increase the intensity, a linearly graded Ge-rich GexSi1-x single crystal was used to prepare a monochromator with 15° asymmetry angles (total expansion/compression factor of 21) for Cu Kα1 radiation. The X-ray diffraction measurements show more than three times higher peak intensity at the output compared with that of a pure Ge monochromator.
- Subjects
GERMANIUM; MONOCHROMATORS; X-ray diffraction; SPECTRUM analysis instruments; RADIATION; SPECTROPHOTOMETERS
- Publication
Journal of Applied Crystallography, 2010, Vol 43, Issue 1, p176
- ISSN
0021-8898
- Publication type
Article
- DOI
10.1107/S0021889809048109