Diffractive-refractive optics: (+,-,-,+) X-ray crystal monochromator with harmonics separation.
Diffractive-refractive optics: (+,-,-,+) X-ray crystal monochromator with harmonics separation.
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衍射-折射光学器件：( ,-,-, ) 带谐波分离功能的 X 射线晶体单色仪。
DOI：
10.1107/s0909049510049204
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发表时间：
2011
影响因子：
2.5
通讯作者：
P. Oberta
中科院分区：
文献类型：
--
作者：
J. Hrdý;P. Mikulík;P. Oberta
本文提出了一种新的双通道切割晶体X射线色散（+，-，-，+）位单色器，它能在空间上分离谐波。衍射面被定向成使得衍射是倾斜的。由于折射，衍射光束沿弧矢方向偏移。偏差取决于波长，并且对于第一谐波比对于更高谐波高得多。这导致空间谐波分离。光线跟踪模拟支持这一想法。
A new kind of two channel-cut crystals X-ray monochromator in dispersive (+,-,-,+) position which spatially separates harmonics is proposed. The diffracting surfaces are oriented so that the diffraction is inclined. Owing to refraction the diffracted beam is sagittally deviated. The deviation depends on wavelength and is much higher for the first harmonics than for higher harmonics. This leads to spatial harmonics separation. The idea is supported by ray-tracing simulation.