Energy Levels and Radiative Rates in Ga XVII

Сomplete and consistent atomic data, including energy levels, wavelengths, lifetimes, and E1, E2, M1, and M2 transition rates, are reported for the low-lying 41 levels of Ga XVII, belonging to the n = 3 states (1s22s22p6)3s23p3, 3s3p4, and 3s23p23d. High-accuracy calculations act as benchmarks for accurate treatments of relativity, electronic correlation, and quantum electrodynamic (QED) effects in multi-valence-electron systems. The calculated energy levels are in excellent agreement with the experimental results and the experimentally compiled energy values of the National Institute for Standards and Technology wherever available. The calculated values, including core–valence correction, are found to be in good agreement with other theoretical and experimental values.