| VEGSO, Karol, Matej JERGEL, Peter SIFFALOVIC, Eva MAJKOVA, Dusan KORYTAR, Zdenko ZAPRAZNY, Petr MIKULÍK a Patrik VAGOVIC. Towards high-flux X-ray beam compressing channel-cut monochromators. Journal of Applied Crystallography. Chester: INT UNION CRYSTALLOGRAPHY, 2016, roč. 49, December, s. 1885-1892. ISSN 1600-5767. Dostupné z: https://dx.doi.org/10.1107/S1600576716013376. |
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@article{1375131,
author = {Vegso, Karol and Jergel, Matej and Siffalovic, Peter and Majkova, Eva and Korytar, Dusan and Zaprazny, Zdenko and Mikulík, Petr and Vagovic, Patrik},
article_location = {Chester},
article_number = {December},
doi = {http://dx.doi.org/10.1107/S1600576716013376},
keywords = {X-ray beam compressing channel-cut monochromators; single-point diamond technology; X-ray diffraction; small-angle X-ray scattering; grazing-incidence small-angle X-ray scattering; SAXS/GISAXS},
language = {eng},
issn = {1600-5767},
journal = {Journal of Applied Crystallography},
title = {Towards high-flux X-ray beam compressing channel-cut monochromators},
url = {http://scripts.iucr.org/cgi-bin/paper?S1600576716013376},
volume = {49},
year = {2016}
}
TY - JOUR
ID - 1375131
AU - Vegso, Karol - Jergel, Matej - Siffalovic, Peter - Majkova, Eva - Korytar, Dusan - Zaprazny, Zdenko - Mikulík, Petr - Vagovic, Patrik
PY - 2016
TI - Towards high-flux X-ray beam compressing channel-cut monochromators
JF - Journal of Applied Crystallography
VL - 49
IS - December
SP - 1885-1892
EP - 1885-1892
PB - INT UNION CRYSTALLOGRAPHY
SN - 16005767
KW - X-ray beam compressing channel-cut monochromators
KW - single-point diamond technology
KW - X-ray diffraction
KW - small-angle X-ray scattering
KW - grazing-incidence small-angle X-ray scattering
KW - SAXS/GISAXS
UR - http://scripts.iucr.org/cgi-bin/paper?S1600576716013376
L2 - http://scripts.iucr.org/cgi-bin/paper?S1600576716013376
N2 - The issue of a high-flux X-ray beam compressing channel-cut monochromator for applications in X-ray metrology is addressed. A Ge(111) compressor with compression ratio 20.3 was designed on the principle of a combination of symmetric and highly asymmetric diffractions. A pilot application of the single-point diamond technology (SPDT) to finish active surfaces of X-ray optics was tested, providing 50% flux enhancement as compared to a Ge(220) counterpart prepared by traditional surface treatment. This is much more than the theoretical 22% forecast and shows the potential of SPDT for preparation of high-flux X-ray compressors with a high compression ratio, where highly asymmetric diffraction with a very low exit angle is inevitable. The implications for efficient collection of X-rays from microfocus X-ray sources are discussed. A comparison of Ge compressors with Ge parallel channel-cut monochromators combined with a 50 mm slit shows the several times higher flux of the former, making them applicable in X-ray diffraction experiments at medium resolution. Furthermore, the Ge(111) compressor was tested as a collimator in high-resolution grazing-incidence small-angle X-ray scattering (GISAXS) measurements of surface gratings, providing experimental resolution close to 400 nm. This is similar to 100 nm smaller than that achieved with the Ge(220) compressor but still approximately twice that of commercial SAXS/GISAXS laboratory setups.
ER -
VEGSO, Karol, Matej JERGEL, Peter SIFFALOVIC, Eva MAJKOVA, Dusan KORYTAR, Zdenko ZAPRAZNY, Petr MIKULÍK a Patrik VAGOVIC. Towards high-flux X-ray beam compressing channel-cut monochromators. \textit{Journal of Applied Crystallography}. Chester: INT UNION CRYSTALLOGRAPHY, 2016, roč.~49, December, s.~1885-1892. ISSN~1600-5767. Dostupné z: https://dx.doi.org/10.1107/S1600576716013376.
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