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Journal Article

Angular anisotropy in the resonant Auger decay of 2p-photoexcited Mg

MPS-Authors
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Whitfield,  S. B.
Fritz Haber Institute, Max Planck Society;

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Hergenhahn,  Uwe
Fritz Haber Institute, Max Planck Society;

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Kabachnik,  Nikolai M.
Fritz Haber Institute, Max Planck Society;

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Langer,  Burkhard
Fritz Haber Institute, Max Planck Society;

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Becker,  Uwe
Fritz Haber Institute, Max Planck Society;

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PhysRevA.50.R3569.pdf
(Publisher version), 199KB

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Citation

Whitfield, S. B., Hergenhahn, U., Kabachnik, N. M., Langer, B., Tulkki, J., & Becker, U. (1994). Angular anisotropy in the resonant Auger decay of 2p-photoexcited Mg. Physical Review A, 50(5), R3659-R3572. doi:10.1103/PhysRevA.50.R3569.


Cite as: https://hdl.handle.net/21.11116/0000-0009-A06D-8
Abstract
We have measured strongly negative β values of the 3s-participator lines at the magnesium 2p→4s and 2p1/2→3d excitations. Observed β values of the spectator lines following 2p→4s excitation are not reproduced by the strict spectator model. Our multiconfiguration Dirac-Fock calculations show that the resonant Auger spectra are influenced by unusually pronounced configuration interaction in the excited state. This influence is strongly enhanced by a change of sign in the Auger amplitude of the leading term near the transition energy, a dynamic effect similar to a Cooper minimum in photoionization.