Physics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phys...45..590r&link_type=abstract
Physica Scripta (ISSN 0031-8949), vol. 45, no. 6, June 1992, p. 590-597. Research supported by Swedish Board for Space Activitie
Physics
9
Electron Transitions, Fine Structure, Hollow Cathodes, Iron, Charge Transfer, Fourier Transformation, Infrared Spectra, Neon, Oscillator Strengths, Quantum Electrodynamics, Stellar Atmospheres
Scientific paper
The Fourier-transform spectrum from an iron-neon hollow-cathode lamp has been studied in the region 9000-11,000 A. The 3d6(5D)5g subconfiguration of Fe II has been established by means of about 220 newly identified 4f-5g transitions. The 5g configuration is well represented by JK coupling, which is demonstrated by the application of the quadrupolic approximation. A consistent pattern in the FWHM for various types of Fe II transitions has been observed. Calculated oscillator strengths are given for all observed lines and their relative accuracy is estimated from observed intensities. The new data offer unprecedented tools for diagnostics of stellar atmospheres.
Johansson Sveneric
Rosberg Maria
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