X-ray monochromator with an energy resolution of 8×10−9 at 14.41 keV
X-ray monochromator with an energy resolution of 8×10−9 at 14.41 keV
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X射线单色仪，能量分辨率为8×10−9（14.41 keV）
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. Ishikawa
中科院分区：
文献类型：
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作者：
M. Yabashi;K. Tamasaku;S. Kikuta;T. Ishikawa
本文介绍了一种在14.41keV处提供120 μeV带宽的超高分辨X射线晶体单色器。该设计使用四个独立的硅晶体，并具有平行于入射光束的输出光束，可以推广到任意能量。在120±15 μeV（140±15 μeV）的带宽内测量到1.3×106光子/s（1.0×107光子/s）的通量。通过测量符合率的9.6±2.0%增强（即，γ（2）−1=0.096±0.020）。
An ultrahigh-resolution x-ray crystal monochromator providing a 120 μeV bandwidth at 14.41 keV is presented. The design, which uses four independent silicon crystals and has an output beam parallel to the incident beam, may be generalized to arbitrary energies. Fluxes of 1.3×106 photons/s (1.0×107 photons/s) in bandwidths of 120±15 μeV (140±15 μeV) were measured. The performance of the monochromator, including the preservation of coherence through it, was verified by measurement of a 9.6±2.0% enhancement in the coincidence rate (i.e., γ(2)−1=0.096±0.020) in an intensity correlation experiment.