Extended calculations of energy levels, radiative properties, AJ, BJ hyperfine interaction constants, and Landé gJ-factors for oxygen-like Kr XXIX

•Energies, transition rates, hyperfine interaction constants, and Landé gJ-factors of the lowest 344 levels in Kr XXIX are reported.•The most accurate and complete atomic data in Kr XXIX are provided to date.

Using the multiconfiguration Dirac-Fock method and the second-order many-body perturbation theory method, highly accurate calculations are performed for the lowest 344 fine-structure levels arising from the 2s22p4, 2s22p5, 2p6, 2s22p33s, 2s22p33p, 2s22p33d, 2s22p43s, 2s22p43p, 2s22p43d, 2p53s, 2p53p, 2p53d, 2s22p34s, 2s22p34p, 2s22p34d, 2s22p34f, and 2s2p44s configurations in O-like Kr XXIX. Complete and consistent atomic data, including excitation energies, lifetimes, wavelengths, hyperfine structures, Landé gJ-factors, and E1, M1, E2, M2 transition rates, line strengths, and oscillator strengths among these 344 levels are obtained. Comparisons are made between our two different sets of results, as well as with the other available experimental and theoretical values. For O-like Kr only a few levels have been experimentally established. The accuracy of our calculated energies is however high enough to facilitate identifications of observed lines involving the n=3,4 levels. The calculated data are also useful for modeling and diagnosing fusion plasmas.