Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....86...95h&link_type=abstract
Astronomy and Astrophysics, vol. 86, no. 1-2, June 1980, p. 95-104.
Astronomy and Astrophysics
Astrophysics
17
Absorption Spectra, Line Spectra, Nickel, Spectral Line Width, Transition Probabilities, Ultraviolet Absorption, Data Reduction, Furnaces, Logarithms, Mach-Zehnder Interferometers, Molecular Oscillators, Radiative Lifetime, Ultraviolet Spectra
Scientific paper
Measurements of the oscillator strengths of the ultraviolet lines of neutral nickel obtained by the use of the combined hook and absorption technique are reported. A total of 221 transitions in the range 1964-4094 A was measured for nickel atoms from a high-temperature graphite furnace (2000-2500 K) using a continuum background source, a Mach-Zehnder interferometer and a 3-m Czerny-Turner spectrograph. Hook and absorption measurements are presented, and radiative lifetimes are derived from log gf values. Comparison of the present values with previous results indicates only those of Bell et al. (1966) and Lennard et al. (1975) to consistently agree with the data presented, although the reliability laser-excitation technique of lifetime measurement is supported over that of Hanle methods.
Huber Martin C. E.
Sandeman R. J.
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