Self-Reversal in the Spectral Lines of Uranium
Abstract:
In 1946, spectrum analysis indicated that the outer-electron configuration of normal uranium atoms was 5f 3 6d 1 7s 2, with an energy level designated representing the normal state. Now that conclusion is experimentally verified by the observation of self-reversed lines in uranium spectra emitted by a high-current pulsed arc between metallic electrodes. Fifty-four reversed lines were observed; thirty-eight involve the normal state and sixteen are distributed among four low metastable states of the same configuration.
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