[HTML][HTML] Atomic oxygen fine-structure splittings with tunable far-infrared spectroscopy

LR Zink, KM Evenson, F Matsushima…�- …�Journal, Part 2�…, 1991 - adsabs.harvard.edu
Fine-structure splittings of atomic oxygen (O-16) in the ground state have been accurately
measured using a tunable far-infrared spectrometer. The 3P0-3pl splitting is 2,060,069.09
(10) MHz, and the 3Pl-3P2 splitting is 4,744,777.49 (16) MHz. These frequencies are
important for measuring atomic oxygen concentration in earth's atmosphere and the
interstellar medium.