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arXiv · 1809.08450

Near--K-edge double and triple detachment of the F- negative ion: observation of direct two-electron ejection by a single photon

A. Müller·A. Borovik Jr.·S. Bari·T. Buhr·K. Holste·M. Martins·A. Perry-Saßmannshausen·R. A. Phaneuf·S. Reinwardt·S. Ricz·K. Schubert·S. Schippers
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Abstract

Double and triple detachment of the F-(1s2 2s2 2p6) negative ion by a single photon have been investigated in the photon energy range 660 to 1000 eV. The experimental data provide unambiguous evidence for the dominant role of direct photo-double-detachment with a subsequent single-Auger process in the reaction channel leading to F2+ product ions. Absolute cross sections were determined for the direct removal of a (1s+2p) pair of electrons from F- by the absorption of a single photon.

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A. Müller, A. Borovik Jr., S. Bari, T. Buhr, K. Holste, M. Martins, A. Perry-Saßmannshausen, R. A. Phaneuf, S. Reinwardt, S. Ricz, K. Schubert, S. Schippers. 2018-09-22. Near--K-edge double and triple detachment of the F- negative ion: observation of direct two-electron ejection by a single photon. https://doi.org/10.1103/physrevlett.120.133202

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