No abstract

We have measured hyperfine-structure splittings and isotope shifts in the 2p 3 3s 5 S 2 →2p 3 3p 5 P 1,2,3 transitions of atomic oxygen using Doppler-free saturated absorption spectroscopy near 778 nm. Values for the hyperfine-structure coupling constants of the 5 S 2 and 5 P 1,2,3 states in 17 O and the 18 OϪ 17 O and 18 OϪ 16 O isotope shifts of the 2p 3 3s 5 S 2 →2p 3 3p 5 P 1,2,3 transitions were found. The set of values for hyperfinestructure coupling constants and isotope shifts is more complete and generally more precise than previously reported results.