Atomic transition-probability measurements for prominent spectral lines of neutral nitrogen

Physics – General Physics

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Electron Transitions, Line Spectra, Neutral Gases, Nitrogen Atoms, Radiative Lifetime, Transition Probabilities, Atmospheric Chemistry, Atomic Energy Levels, Configuration Interaction, Least Squares Method

Scientific paper

Relative transition probabilities of 29 lines belonging to the 3s-3p, 3s-4p, 3p-3s double prime, and 2s2p(4)-2s(2)2p(2)4p transition arrays of N I have been measured in emission with a wall-stabilized arc and were normalized to an absolute scale utilizing two recent life time results. The experiment was undertaken to help resolve some long-standing discrepancies in the nitrogen data. The results are usually slightly larger than two earlier emission measurements but are in closer agreement with recent calculations. The total uncertainties of the individual transition-probability values are estimated not to exceed a range from + or - 12 to + or - 15 percent, the larger uncertainties occurring for the very weak lines.

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