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On intensity ratios of helium and hydrogen lines in quiescent prominences

โœ Scribed by N. N. Morozhenko

Publisher
Springer
Year
1974
Tongue
English
Weight
488 KB
Volume
34
Category
Article
ISSN
0038-0938

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๐Ÿ“œ SIMILAR VOLUMES

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Diffuse penetration of ionizing radiation into prominences with filamentary structure is considered. The equations of radiative transfer, ionization balance and steady state of the triplet system of the helium atom (with 27 levels and continuum) are solved for a chosen model of prominence. The calcu

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Observations of a number of helium triplet (~.210830, 4713, 4471, 3889, 4026) and hydrogea (H),, g, r/, 0) emission line intensities in six quiescent prominences are presented. The regions of prominence and neighboring corona were raster-scanned by the telescope, and all lines were measured concurre

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Spectroscopic observations of the Nal D emission lines of prominences were made with the Domeless Solar Telescope in Hida Observatory. When active prominences are bright in the D 2 emission line, the intensity ratio of D~ to D 2 is found to deviate significantly from the theoretical ratio of the opt