Precision measurements of vacuum wavelengths between 3425 and 6907 Å have been made of 95 lines in the spectrum of <sup>86</sup>Kr from an Englehard-type lamp operated at the triple point of nitrogen. The accuracy obtained is of the order of 0.0001 Å. The wavenumbers computed from the experimental data are consistent to 1 mK or better.
F. M. PHELPS,III, "86Kr Vacuum Wavelengths," J. Opt. Soc. Am. 54, 864-868 (1964)