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10 July 2018 Advancements in x-ray reflection gratings (Conference Presentation)
Randall L. McEntaffer
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Proceedings Volume 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray; 106990R (2018) https://doi.org/10.1117/12.2312655
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States
Abstract
Many of the key science goals in X-ray astronomy require spectroscopy in the soft energy band, 0.2 - 2.0 keV. The performance requirements placed on spectrometers typically have spectral resolving powers in the thousands with effective areas in the hundreds of square centimeters. Obtaining both of these requirements in a single instrument is a challenge for a variety of reasons. Here, we discuss the development tasks specific to off-plane reflection gratings. We detail the requirements that drive our technical challenges such as fabrication, alignment, and integration. Finally, we summarize recent results of X-ray performance testing demonstrating very high diffraction efficiency and resolving power.
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Randall L. McEntaffer "Advancements in x-ray reflection gratings (Conference Presentation)", Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 106990R (10 July 2018); https://doi.org/10.1117/12.2312655
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KEYWORDS
X-rays
Spectral resolution
Diffraction
Diffraction gratings
Optical alignment
Spectrometers
Spectroscopes
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