Oscillator strengths of some weak Fe II lines of astrophysical interest

Details Oscillator strengths of some weak Fe II lines of astrophysical interest Oscillator strengths of some weak Fe II lines of astrophysical interest

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230..244h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 1, April 1990, p. 244-247. Research supported by DFG.

Astronomy and Astrophysics

Astrophysics

63

Astronomical Spectroscopy, Emission Spectra, Iron, Line Spectra, Oscillator Strengths, Spectrum Analysis, Current Density, Hollow Cathodes, Magnetic Field Configurations, Stellar Models, Oscillator Strengths, Fe Ii, Hollow Cathode

Scientific paper

Oscillator strengths of 20 weak Fe II lines in the wavelength range 430-780 nm have been obtained by emission measurements on a high-current hollow-cathode. By applying a magnetic field the sputter rate and the current density in the discharge could be increased considerably so that very faint Fe II lines were detectable with a sufficient S/N ratio. The measured branching ratios have been calibrated to absolute values by means of the data of Kroll and Kock. The overall uncertainty in the f-values is less than 28%. A comparison with literature data is given.

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