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Measurement of wavelengths and lamb shifts for inner-shell transitions in Fe XVIII-XXIVThe wavelengths of inner-shell 1s-2p transitions in the ions Fe XVIII-XXIV have been measured in solar flare spectra recorded by the Naval Research Laboratory crystal spectrometer (SOLFLEX) on the Air Force P78-1 spacecraft. The measurements are compared with previous measurements and with recently calculated wavelengths. It is found that the measured wavelengths are systematically larger than the wavelengths calculated using the Z-expansion method by up to 0.65 mA. For the more highly charged ions, these differences can be attributed to the QED contributions to the transition energies that are not included in the Z-expansion calculations.
Document ID
19860055116
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Seely, J. F.
(Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Feldman, U.
(U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Safronova, U. I.
(AN SSSR Institut Spektroskopii, Troitsk, Ussr)
Date Acquired
August 12, 2013
Publication Date
May 15, 1986
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 304
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
86A39854
Distribution Limits
Public
Copyright
Other

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