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Proceedings Paper

Grating arrays for high-throughput soft x-ray spectrometers
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Paper 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.

Paper Details

Date Published: 29 January 2004
PDF: 12 pages
Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, (29 January 2004); doi: 10.1117/12.510045
Show Author Affiliations
Andrew P. Rasmussen, Columbia Univ. (United States)
Andrew Aquila, Lawrence Berkeley National Lab. (United States)
Jay Bookbinder, Smithsonian Astrophysical Observatory (United States)
Chih-Hao Chang, Massachusetts Institute of Technology (United States)
Eric M. Gullikson, Lawrence Berkeley National Lab. (United States)
Ralf K. Heilmann, Stanford Univ. (United States)
Steven M. Kahn, Stanford Univ. (United States)
Frits Paerels, Columbia Univ. (United States)
Mark L. Schattenburg, Massachussets Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5168:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy
Oberto Citterio; Stephen L. O'Dell, Editor(s)

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