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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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