Recent R-matrix calculations of electron impact excitation rates in FexlI are used to derive the theoretical emission line ratio R I = I(195 1 ~)/I(1242 A,), which as potentially a useful electron density diagnoshc for the solar inner corona (r < 1.05 R o ). These results are found to be significant
On green-to-red line intensity ratio in the solar corona
โ Scribed by S. Chandra; U. Narain
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 58 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
โฆ Synopsis
An improved formula for the green-to-red line intensity ratio in the solar corona is proposed. The results are compared with those given by the previous expression.
๐ SIMILAR VOLUMES
This paper elucidates the topological relationship between the distribution of polarity neutral lines on the solar surface and the interspersion of closed field lines among open field lines in the corona. The solar surface contains polarity neutral lines, that are spatially nested in a series-and-pa
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