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Fexivand other line identifications in the solar EUV spectrum

โœ Scribed by S. O. Kastner

Publisher
Springer
Year
1991
Tongue
English
Weight
408 KB
Volume
135
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

A number of solar extreme ultraviolet lines, previously unidentified or given assignments at the time of observation, are found to be coincident in wavelength with transitions recently identified as aluminum-like or magnesium-like in the laboratory. Three tables summarize the results of this comparison, which does not imply positive identifications but suggests that several assignments may be valid. Additional assignments are proposed in other ions and a revised table of predicted and observed forbidden line wavelengths in the Ne ~ sequence is included.

๐Ÿ“œ SIMILAR VOLUMES

Proposed MgV, FeXIVand forbidden FeXVIIl
Proposed MgV, FeXIVand forbidden FeXVIIline identifications in the EUV solar spectrum
โœ S. O. Kastner ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Springer ๐ŸŒ English โš– 146 KB

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 Mg I and Fe XlV in the EUV spectrum and an expected forbidden line of FexvI1 near 1190 ~.

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The relative intensity of two CI lines at 1993.6 โ€ข and 1657.4 A, observed in the limb spectrum of the sun, is a factor 2.6 โ€ข 10 a larger than that expected if both lines were optically thin. It is shown that the observed intensity ratio may be explained in terms of the transfer of photons from 2 165