[12.02] Efficiency of a Grazing Incidence Off-Plane Grating in the Soft X-Ray Region

AAS 207th Meeting, 8-12 January 2006
Session 12 Con-X Instruments and Optics
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[12.02] Efficiency of a Grazing Incidence Off-Plane Grating in the Soft X-Ray Region

J. F. Seely, J. M. Laming (NRL), L. I. Goray (I.I.G. Inc.), B. Kjornrattanawanich, G. E. Holland (NRL), K. A. Flanagan, R. K. Heilmann, C.-H. Chang, M. L. Schattenburg (MIT), A. P. Rasmussen (Stanford Univ.)

We report on efficiency measurements of a grazing incidence diffraction grating in the off-plane mount, performed using polarized synchrotron radiation on the NRL beamline at Brookhaven National Laboratory/NSLS. 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 nm to 5.0 nm wavelength range and were compared to the efficiencies calculated using the PCGRATE-SX grating simulation code of Goray and coworkers. 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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