Double Core-Hole Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi mathvariant="bold">N</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>: Beating the Auger Clock

Li, Fang; Hoener, M.; Geßner, Oliver; Tarantelli, Francesco; Pratt, S. T.; Kornilov, Oleg; Buth, Christian; Gühr, Markus; Kanter, E. P.; Bostedt, Christoph; Bozek, John D.; Bucksbaum, P. H.; Chen, M.; Coffee, Ryan; Cryan, James; Glownia, M.; Kukk, E.; Leone, Stephen R.; Berrah, N.

doi:10.1103/physrevlett.105.083005

Cited by 166 publications

(131 citation statements)

References 28 publications

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“…Also, hidden resonant excitations were unveiled in high charge states of neon [8], but their role in the overall photoionization process is negligible for light atoms as they appear very localized. The creation of double-core-hole states was observed and has received considerable attention in the context of its application for chemical analysis [9][10][11]. In addition, experiments with different pulse durations revealed the phenomenon of frustrated absorption, or "intensity-induced x-ray transparency" reflecting efficient depletion of the K shells of light elements in intense x-ray pulses [4,5].…”

Section: Introductionmentioning

confidence: 99%

Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laser

et al. 2013

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The sequential inner-shell multiple ionization of krypton was investigated at the Linac Coherent Light Source using ion time-of-flight spectroscopy at photon energies above (2 keV) and below (1.5 keV) the L edge with two x-ray pulse lengths (5 and 80 fs, nominally) and various pulse energies. At 2.5 mJ pulse energy, charge states up to Kr 17+ were recorded for M-shell ionization and charge states up to Kr 21+ for L-shell ionization. Comparing the experimental charge state distribution to Monte Carlo rate-equation calculations, we find a strong enhancement of higher charge states at 2 keV photon energy as compared to the theoretical predictions. This enhancement is explained with a resonant ionization pathway where multiple excitations into outer valence and Rydberg orbitals are followed by autoionization. These resonant pathways play an important role for the photoionization of ions with charge higher than Kr 12+ , for which direct one-photon L-shell photoionization is energetically impossible at 2 keV photon energy. Only a small pulse-length dependence of the charge state yield is observed at an x-ray pulse energy of 0.4 mJ.

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Section: Introductionmentioning

confidence: 99%

Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laser

et al. 2013

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“…Refs. [22][23][24][25][26] and references therein) than for single holes, and to be especially strong for two-site double core holes (cf. Refs.…”

Section: Introductionmentioning

confidence: 99%

Homonuclear site-specific photochemistry by an ion–electron multi-coincidence spectroscopy technique

Eland

Linusson

Mucke

et al. 2012

Chemical Physics Letters

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PostprintThis is the accepted version of a paper published in Chemical Physics Letters. This paper has been peerreviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Eland, J H., Linusson, P., Mucke, M., Feifel, R. (2012) Homonuclear site-specific photochemistry by an ion-electron multi-coincidence spectroscopy technique. Abstract By combining multi-particle coincidence detection of electrons and ions with ionization by soft X-ray synchrotron radiation we demonstrate an effective tool for atomic spectroscopy and sitespecific photochemistry. Its most novel capability is application to molecular fragmentation after K-shell vacancy production in atoms distinguished only by their chemical environment. Chemical Physics Letters

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“…4) and N 2 . 5,6 Molecular core level doubly ionized states with both vacancies on the same atomic site can be formed without intense x-ray pulses, e.g., indirectly through core-core-core Auger decay. Extensive explorations of these states in the past (see, e.g., Refs.…”

Section: Introductionmentioning

confidence: 99%

Inner-shell single and double ionization potentials of aminophenol isomers

Kryzhevoi

Santra

Cederbaum

2011

The Journal of Chemical Physics

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A comprehensive study of single and double core ionization potentials of the aminophenol molecule is reported. The role of relaxation, correlation, relativistic, and basis set effects in these potentials is clarified. Special attention is paid to the isomer dependence of the single and double core ionization potentials. Some of them are also compared with the respective values of the phenol and aniline molecules. It is shown that the core level single ionization potentials of the para-, meta-, and ortho-aminophenol molecules differ only slightly from each other, rendering these structural isomers challenging to distinguish for conventional x-ray photoelectron spectroscopy. In contrast, the energy needed to remove two core electrons from different atoms depends noticeably on the mutual arrangement and even on the relative orientations of the hydroxyl and amine groups. Together with the electrostatic repulsion between the two core holes, relaxation effects accompanying double core ionization play a crucial role here. The pronounced sensitivity of the double ionization potentials, therefore, enables a spectroscopic characterization of the electronic structure of aminophenol isomers by means of x-ray two-photon photoelectron spectroscopy.

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Double Core-Hole Production inN2: Beating the Auger Clock

Cited by 166 publications

References 28 publications

Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laser

Resonance-enhanced multiple ionization of krypton at an x-ray free-electron laser

Homonuclear site-specific photochemistry by an ion–electron multi-coincidence spectroscopy technique

Inner-shell single and double ionization potentials of aminophenol isomers

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