Abstract
view Abstract Citations (24) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Hook-Method Measurements of gf-values for Ultraviolet Fe I and Fe II Lines on a Shock Tube Huber, Martin C. E. Abstract Transition probabilities for 14 lines of Fe ii and 12 lines of Fe I in the wavelength region 25602737 A were measured by use of a shock tube and the hook method. Absolute oscillator strengths for resonance lines of Fei reported by Banfield and Huber were used to determine the number density of neutral iron in the shock-heated gas. With the assumption of thermal equilibrium, the density of singly ionized iron atoms in this gas was then computed from the measured temperature and pressure with the aid of the Saha equation. Our results on the 12 strongest of the 13 lines belonging to the first ultraviolet multiplet of Fe ii indicate that the multiplet f-value is larger by a factor of 2 than that derived from lifetime measurements by Assousa and Smith. Subject headings: spectra, laboratory - spectra, ultraviolet - transition probabilities Publication: The Astrophysical Journal Pub Date: May 1974 DOI: 10.1086/152868 Bibcode: 1974ApJ...190..237H full text sources ADS |
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