Grating arrays for high-throughput soft x-ray spectrometers

Andrew P. Rasmussen; Andrew Aquila; Jay Bookbinder; Chih-Hao Chang; Eric M. Gullikson; Ralf K. Heilmann; Steven M. Kahn; Frits Paerels; Mark L. Schattenburg

doi:10.1117/12.510045

29 January 2004 Grating arrays for high-throughput soft x-ray spectrometers

Andrew P. Rasmussen, Andrew Aquila, Jay Bookbinder, Chih-Hao Chang, Eric M. Gullikson, Ralf K. Heilmann, Steven M. Kahn, Frits Paerels, Mark L. Schattenburg

Author Affiliations +

Proceedings Volume 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy; (2004) https://doi.org/10.1117/12.510045
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Cosmic soft X-ray spectroscopy exploits principal transitions of astrophysically abundant elements to infer physical properties of objects in the sky. Most of these transitions, however, fall well below 2 keV, or 6 Angstroms. Consquently, grating spectrometers offer the current, best means by which to analyze soft X-rays from such sources, where throughput and resolving power must be maximized together. We describe grating spectrometer design candidates for the future mission Constellation-X, and how the grating array on board (~1000 gratings in a 1600mm diameter, each for 4 instruments) may be implemented. Grating fabrication and grating alignment approaches require special consideration (over the XMM-Newton RGS experience), because of grating replication fidelity and instrument mass constraints.

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Andrew P. Rasmussen, Andrew Aquila, Jay Bookbinder, Chih-Hao Chang, Eric M. Gullikson, Ralf K. Heilmann, Steven M. Kahn, Frits Paerels, and Mark L. Schattenburg "Grating arrays for high-throughput soft x-ray spectrometers", Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, (29 January 2004); https://doi.org/10.1117/12.510045

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