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@article{964881,
author = {Oberta, P. and Mikulík, Petr and Kittler, M. and Hrdý, J.},
article_number = {1},
doi = {http://dx.doi.org/10.1107/S0909049511009083},
keywords = {diffractive-refractive optics; x-ray optics; x-ray diffraction},
language = {eng},
issn = {0909-0495},
journal = {Journal of Synchrotron Radiation},
title = {X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics},
url = {http://scripts.iucr.org/cgi-bin/paper?S0909049511009083},
volume = {18},
year = {2011}
}
TY - JOUR
ID - 964881
AU - Oberta, P. - Mikulík, Petr - Kittler, M. - Hrdý, J.
PY - 2011
TI - X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics
JF - Journal of Synchrotron Radiation
VL - 18
IS - 1
SP - 522-526
EP - 522-526
SN - 09090495
KW - diffractive-refractive optics
KW - x-ray optics
KW - x-ray diffraction
UR - http://scripts.iucr.org/cgi-bin/paper?S0909049511009083
L2 - http://scripts.iucr.org/cgi-bin/paper?S0909049511009083
N2 - Two crystals with precise parabolic holes were used to demonstrate sagittal beam collimation by means of a diffractive-refractive double-crystal monochromator. A new approach is introduced and beam collimation is demonstrated. Two Si(333) crystals with an asymmetry angle of [alpha] = 15 deg were prepared and arranged in a dispersive position (+,-,-,+). Based on theoretical calculations, this double-crystal set-up should provide tunable beam collimation within an energy range of 6.3-18.8 keV ([Theta]B = 71-18.4 deg). An experiment study was performed on BM05 at ESRF. Using 8.97 keV energy, the beam profile at various distances was measured. The experimental results are in good agreement with theoretical predictions. Owing to insufficient harmonic suppression, the collimated (333) beam was overlapped by horizontally diverging (444) and (555) beams.
ER -
OBERTA, P., Petr MIKULÍK, M. KITTLER and J. HRDÝ. X-ray collimation by crystals with precise parabolic holes based on diffractive-refractive optics. \textit{Journal of Synchrotron Radiation}. 2011, vol.~18, No~1, p.~522-526. ISSN~0909-0495. Available from: https://dx.doi.org/10.1107/S0909049511009083.
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