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Updated: Aug 9, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Efficiency of a grazing-incidence off-plane grating in the soft-x-ray region
J F Seely1, L I Goray, Benjawan Kjornrattanawanich
1Space Science Division, U.S. Naval Research Laboratory, Washington, D.C. 20375, USA. john.seely@nrl.navy.mil
Abstract:
Efficiency measurements of a grazing-incidence diffraction grating in the off-plane mount were performed using polarized synchrotron radiation. The grating had 5000 grooves/mm, an effective blaze angle of 14 degrees, and was gold coated. The efficiencies in the two polarization orientations (TM and TE) were measured in the 1.5-5.0 nm wavelength range and were compared with the efficiencies calculated using the PCGrate-SX code. The TM and TE efficiencies differ, offering the possibility of performing unique science studies of astrophysical, solar, and laboratory sources by exploiting the polarization sensitivity of the off-plane grating.
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