One‐dimensional focusing of synchrotron x‐ray radiation with curved arrays of reflectors

We present results of the experimental tests of various arrays of reflectors acting as x‐ray optical elements. Planar reflectors were arranged in a vertical stack and aligned with a common center of curvature to create a focusing array with cylindrical curvature. The experiments were carried out using x‐ray radiation in the spectral range 3.5–7 keV produced at beam line X‐27C of the National Synchrotron Light Source at Brookhaven National Laboratory. The focal distribution had a width of 8 mm and a maximum intensity gain of 7.3, as measured with a 0.4 mm diameter pinhole. An x‐ray beam splitter consisting of arrays of reflectors has also been designed and tested. The separation of x‐ray beams is 40 mrad, and the intensity of each of the two beams is about 0.32 of the original x‐ray beam.