Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...200..520b&link_type=abstract
Astrophysical Journal, vol. 200, Sept. 1, 1975, pt. 1, p. 520-523.
Astronomy and Astrophysics
Astrophysics
16
Abundance, Line Spectra, Optical Resonance, Solar Spectra, Titanium, Absorption Spectra, Atomic Beams, Neutral Particles, Photosphere, Solar Atmosphere, Titanium Carbides, Transition Probabilities
Scientific paper
Absolute f-values for 13 resonance lines of neutral titanium are reported which were measured experimentally by the atomic-beam method. The atomic beam was produced entirely by effusion from within a TiC boat in order to overcome the difficulties in evaporating titanium, and microbalance weighings of instantaneous titanium-deposit rates were compared with quantitative chemical analyses of total deposits to determine gettering effects. Boltzmann factors were applied to the beam-concentration measurements to calculate the f-values. The present results are compared with previous experimental results, and conversion factors are supplied for placing previously obtained relative f-values on an absolute scale. The effect of an improved absolute scale for neutral-titanium gf-values on the solar photospheric titanium abundance is considered.
Bell Gerald D.
Kalman L. B.
Tubbs Eldred F.
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