Zeeman effect and g-values for neutral nitrogen and oxygen

Zeeman patterns of red and infrared lines of nitrogen and oxygen, as observed in magnetic fields of 35,000 and 86,000 gausses, at the National Bureau of Standards and the Massachusetts Institute of Technology, respectively, show various degrees of distortion due to Paschen-Back interaction. The interpretation of these patterns has afforded an interesting application of quantum theory to the elucidation of the Paschen-Back effect. The g-values derived for the energy levels of N I and 0 I are the first to be announced for neutral atoms of atomic number less than neon, 10, and are found to conform with those required for LS-coupling despite the fact that the term intervals do not conform. with the Lande ratios.