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  • 1980-1984  (4)
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Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    The coronal spectra of Fe xv and Ni xvii (1980)
    Springer
    Solar physics 65 (1980), S. 181-196 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Predicted allowed and forbidden EUV line intensities of Fe xv and Ni xvii are presented in explicit graphical form, clarifying and extending the earlier treatment of Bely and Blaha (1968). In the case of the former ion a detailed comparison with available observations leads to questioning or rejection of some presently accepted line identifications (323.57 Å, 317.61 Å), and on the other hand suggests that a quiet Sun line at 304.853 Å is due to Fe xv. For the little known ion Ni xvii estimates of level structure and line wavelengths are given and a preliminary comparison is made with recent flare observations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00151392
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  • 2
    Digitale Medien
    Digitale Medien
    Proposed Mg V, Fe XIV and forbidden Fe XVII line identifications in the EUV solar spectrum (1982)
    Springer
    Solar physics 81 (1982), S. 59-61 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Some line identifications in solar disk and limb spectra are proposed on the basis of recent laboratory and theoretical results reported in the literature, including allowed lines of Mgi and Fexiv in the EUV spectrum and an expected forbidden line of Fexvii near 1190 Å.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00151979
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Diagnostic application of highly ionized iron lines in the XUV spectrum of a solar flare (1984)
    Springer
    Solar physics 92 (1984), S. 199-216 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Recent atomic data have been used to analyze a solar flare spectrum obtained with the Goddard Space Flight Center's grating spectrometer on the OSO-5 satellite. There exist in the wavelength region 90–200 Å strong lines from each of the ions Fe xviii-Fe xxiv. The Fe xxi lines can be used as an electron density diagnostic for the 107 K plasma. From our analysis of a particular flare, we find a steep positive slope in the emission measure between 106.5 and 107.2 K and an electron density of ∼4 × 1011 cm−3 at 107 K. We emphasise the need for high spectral and spatial resolution observations of solar flares in this wavelength region, which has to date been largely neglected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00157246
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Expected intensities of solar forbidden lines emitted from 2p k (k = 2, 3, 4) configurations (1983)
    Springer
    Solar physics 85 (1983), S. 41-51 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Predicted intensities of all significant transitions within the ground configurations of six-, seven-, and eight-electron ions are tabulated for solar conditions, on a common scale. Some applications of the table entries to line identification and emission measure analysis are presented, including proposed Mg vi classifications for the coronal lines 3488.5 Å and 3502.5 Å.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00148256
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