Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...201..189g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 201, no. 1, July 1988, p. 189-193.
Astronomy and Astrophysics
Astrophysics
16
Far Ultraviolet Radiation, Line Spectra, Nitrogen, Oscillator Strengths, Ultraviolet Spectra, Argon Plasma, Astronomical Spectroscopy, Fine Structure, Radiometric Resolution
Scientific paper
Oscillator strengths of 11 lines (or strongly blended lines) of neutral nitrogen, belonging to 7 weak multiplets in the 1300 - 1500 Å spectral range are measured in emission with a wall-stabilised arc. Through comparisons with a strong N I reference line, the absolute scale of oscillator strengths of the investigated weak lines is connected to that for strong multiplets by Goldbach et al.(1986). Radiometric calibration is performed by means of the argon continuum radiation. The uncertainty in the absolute gf-values is at the 20 - 25% level. The early experimental absolute scale of Labuhn (1965) is found to be overestimated by a mean factor of 1.4.
Goldbach Claudine
Nollez Gérard
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