Zeeman effect data are given for 152 lines of La I and 506 lines of La II in the wave-length range 2257A to 7484A. Spectrograms were made at fields of 81,230, 83,370, and 86,570 oersteds using a Bitter electromagnet, and the 24 plates obtained with three diffraction gratings operating simultaneously were measured with an automatic comparator. g values are given for almost all of the classified terms of La I and La II, and the determinations from various lines agree usually to within 0.004 g unit. This makes available an array of unusually precise data for the evaluation of perturbations in typical rich two-electron and three-electron spectra. The g-sum rule of Pauli is verified in a number of cases to within a few tenths of a percent.
© 1945 Optical Society of AmericaFull Article | PDF Article
J. Opt. Soc. Am. 13(1) 1-24 (1926)
William F. Meggers and Keivin Burns
J. Opt. Soc. Am. 14(6) 449-454 (1927)
George R. Harrison
J. Opt. Soc. Am. 17(6) 389-416 (1928)