A soft X-ray spectrometer for diffuse cosmic sources

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Spectroscopy, Satellite-Borne Instruments, Spaceborne Astronomy, X Ray Sources, X Ray Spectroscopy, Bragg Angle, Crystallography, Lead Compounds, Phthalates, Potassium Compounds, Power Spectra, Stearates

Scientific paper

The design of a Bragg crystal spectrometer for the diffuse soft X-ray background is described. The instrument has no moving parts; a 6 degree x 20 degree FWHM field of view; resolution in the range 20-100; and spans wavelength ranges 44-80 A or 13-23 A when lead stearate or KAP crystals are used. If placed on a small spacecraft, integration times of approximately 1000 s will be required to detect the existence of the stronger lines expected in the X-ray background.

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