Natural widths in open-shell atoms: The K absorption spectrum of atomic oxygen

Menzel, A.; Benzaid, S.; Krause, M.O.; Caldwell, C.D.; Hergenhahn, Uwe; Bissen, M.

doi:10.1103/PhysRevA.54.R991

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Natural widths in open-shell atoms: The K absorption spectrum of atomic oxygen

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Hergenhahn, Uwe
Fritz Haber Institute, Max Planck Society;

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Citation

Menzel, A., Benzaid, S., Krause, M., Caldwell, C., Hergenhahn, U., & Bissen, M. (1996). Natural widths in open-shell atoms: The K absorption spectrum of atomic oxygen. Physical Review A, 54(2), R991-R994. doi:10.1103/PhysRevA.54.R991.

Cite as: https://hdl.handle.net/21.11116/0000-0009-AA2F-4

Abstract

Total-ion-yield measurements and Hartree-Fock calculations are presented for the 1s→np, n=2 to 5 photoexcitations in atomic oxygen. Energies and relative intensities of the [1s]2s²2p⁴(^⁴P)np and [1s]2s²2p⁴(^²P)np series members are determined, and the apparent linewidths are measured. It is shown that natural widths in an open-shell atom can be deduced from an absorption spectrum only with the aid of theoretical input. The linewidth for the six individual components contained in the 1s→2p transition is determined to be 140(9) meV.