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Bent crystal spectrometer for solar X-ray spectroscopyA bent crystal spectrometer employs a collimated beam of X-rays incident on the crystal over a range of Bragg angles determined by the orientation and curvature of the crystal surface. It provides continuous and simultaneous coverage of all X-ray wavelengths within its spectral range. In-flight testing for solar X-ray spectroscopy was performed using a small instrument to supplement the wavelength coverage of several scanning spectrometers used to study solar active regions in the 9-24 A range. Later testing included modifications to alleviate problems caused by ultraviolet radiation. Future usage of the device will include studies of time variable emission from solar flares or discrete galactic X-ray sources, and the first major experiment to utilize bent crystal spectrometers will be the Solar Maximum Mission satellite in 1979.
Document ID
19770067328
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Rapley, C. G.
(University Coll. London, United Kingdom)
Culhane, J. L.
(University College London, United Kingdom)
Acton, L. W.
(University Coll. London, United Kingdom)
Catura, R. C.
(University Coll. London, United Kingdom)
Joki, E. G.
(University Coll. London, United Kingdom)
Bakke, J. C.
(Lockheed Research Laboratories Palo Alto, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Publication Information
Publication: Review of Scientific Instruments
Volume: 48
Subject Category
Instrumentation And Photography
Accession Number
77A50180
Funding Number(s)
CONTRACT_GRANT: NAS2-6723
CONTRACT_GRANT: NASW-1834
Distribution Limits
Public
Copyright
Other

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