Doubly curved imaging Bragg crystal spectrometer for X-ray astronomy

B. P. Byrnak, Finn Erland Christensen, Niels Jørgen Stenfeldt Westergaard, H. W. Schnopper

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    An X-ray spectrometer which is sensitive in the 0.5-7-keV energy range and is intended for use onboard astronomical satellites has been studied. The Bragg reflected rays from a doubly bent crystal positioned downstream of the focal plane of a grazing-incidence concentrator are focused along the axis of a position sensitive detector. A high throughput concentrator with densely nested thin-foil conical mirrors approximating a Wolter-1 system can be used without loss of spectral resolution. Other advantages include simultaneous (scanning free) coverage of the spectral range of interest, nearly stigmatic imaging, and crystal-limited resolution
    Original languageEnglish
    JournalApplied Optics
    Volume24
    Issue number16
    Pages (from-to)2543-2547
    ISSN1559-128X
    DOIs
    Publication statusPublished - 1985

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