Ring laser for the determination of linear velocities

Electron excitation rates for iron ions

“…The best calculations should be those of Baluja et al (1987) but the accuracy of these calculations is difficult to assess. The experimental data of Kolosov and Smirnov (1982) cover 21 transitions but at only one energy (50 eV). They suggest an absolute error of 35% in their results for the strongest transitions, and 45% for the weakest.…”

“…The only data for Fe I are the experimental measurements of Kolosov and Smirnov (1982) which cover 74 transitions at one energy (50 eV). We accept the error estimates of 40-50% quoted by the authors, but without further supporting evidence a C rating is given.…”