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Rocket spectrogram of a solar flare in the 10-100 A regionThe soft (10-100 A) X-ray spectrum of an M-class solar flare was observed with a high-resolution (0.02 A) rocket-borne spectrograph on 1982 July 13. The spectrum samples an area of 600/sq arcsec on the sun, centered on or near the brightest X-ray feature of the flare. Several hundred emission lines characteristic of temperatures from about 0.5 to 7 x 10 to the 6th K have been photographically recorded. All but three of the stronger lines have been identified. It is argued that previous identification of the line at 17.62 A as iron Ly-alpha is incorrect. Spectral lines from nickel, iron, chromium, calcium, sulphur, silicon, aluminium, magnesium, neon, oxygen, nitrogen, and carbon are tabulated and discussed with extensive reference to earlier work. Absolute line intensities are given and the calibration of the telescope-spectrograph is discussed.
Document ID
19850052496
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Acton, L. W.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Bruner, M. E.
(Lockheed Missiles and Space Co. Palo Alto, CA, United States)
Brown, W. A.
(Lockheed Research Laboratories Palo Alto, CA, United States)
Fawcett, B. C.
(Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot Oxon, United Kingdom)
Schweizer, W.
(Fraunhofer Institut fuer physikalische Messtechnik Freiburg-im-Breisgau, Germany)
Speer, R. J.
(Imperial College of Science and Technology London, United Kingdom)
Date Acquired
August 12, 2013
Publication Date
April 15, 1985
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 291
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
85A34647
Funding Number(s)
CONTRACT_GRANT: NAS5-23758
CONTRACT_GRANT: NAS5-25727
CONTRACT_GRANT: NAS2-6723
Distribution Limits
Public
Copyright
Other

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