Published June 1991
| Version v1
Journal article
Fe XIV line ratios in the sun
- 1. U.S. Navy, E.O. Hulburt Center for Space Research, Washington, DC (USA)
- 2. Belfast, Queen's University (Northern Ireland)
Description
Recent R-matrix calculations of electron-impact excitation rates for Fe XIV are used to derive theoretical electron density-sensitive emission-line ratios involving transitions in the wavelength range 211-274 A. Electron densities deduced from the observed line ratios for solar flares and active regions, obtained with the Naval Research Laboratory's SO82A slitless spectrograph on board Skylab, are in excellent internal agreement and, furthermore, compare favorably with densities determined independently from line ratios in Fe XII and Fe XIII. These results provide experimental support for the accuracy of the atomic data adopted in the analysis, as well as for the techniques used to calculate the line ratios. 36 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 373
- Series
- Astrophys. J.
- Journal Page Range
- 695-698
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22078533
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- COMPARATIVE EVALUATIONS; ELECTRON COLLISIONS; ELECTRON DENSITY; EMISSION SPECTRA; EXCITATION; IRON; PLANETARY NEBULAE; R MATRIX; SOLAR ACTIVITY; SOLAR FLARES; SPECTRA; ULTRAVIOLET SPECTRA
- Descriptors DEC
- COLLISIONS; ELEMENTS; ENERGY-LEVEL TRANSITIONS; EVALUATION; MATRICES; METALS; NEBULAE; STELLAR ACTIVITY; STELLAR FLARES; TRANSITION ELEMENTS