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Proceedings Article

Grating arrays for high-throughput soft x-ray spectrometers

[+] Author Affiliations
Andrew P. Rasmussen, Frits Paerels

Columbia Univ. (USA)

Andrew Aquila, Eric M. Gullikson

Lawrence Berkeley National Lab. (USA)

Jay Bookbinder

Smithsonian Astrophysical Observatory (USA)

Chih-Hao Chang

Massachusetts Institute of Technology (USA)

Ralf K. Heilmann, Steven M. Kahn

Stanford Univ. (USA)

Mark L. Schattenburg

Massachussets Institute of Technology (USA)

Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, 248 (January 29, 2004); doi:10.1117/12.510045
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From Conference Volume 5168

  • Optics for EUV, X-Ray, and Gamma-Ray Astronomy
  • Oberto Citterio; Stephen L. O'Dell
  • San Diego, California, USA | August 03, 2003


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.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Andrew P. Rasmussen ; Andrew Aquila ; Jay Bookbinder ; Chih-Hao Chang ; Eric M. Gullikson, et al.
"Grating arrays for high-throughput soft x-ray spectrometers", Proc. SPIE 5168, Optics for EUV, X-Ray, and Gamma-Ray Astronomy, 248 (January 29, 2004); doi:10.1117/12.510045; http://dx.doi.org/10.1117/12.510045

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