T. Marchenko
YOU?
Author Swipe
View article: High-resolution electron–multi-ion coincidence set-up for gas-phase experiments in the tender and hard X-ray range
High-resolution electron–multi-ion coincidence set-up for gas-phase experiments in the tender and hard X-ray range Open
The MUSTACHE setup (MUlti-STep photofragmentation studies by Auger electron–ion Coincidences using High Energy photons) is a high-resolution electron–multi-ion coincidence system optimized for gas-phase experiments in the tender (∼2–10 keV…
View article: High-resolution electron-multi-ion coincidence set-up for gas-phase experiments in the tender and hard X-ray range
High-resolution electron-multi-ion coincidence set-up for gas-phase experiments in the tender and hard X-ray range Open
The MUSTACHE setup (MUlti-STep photofragmentation studies by Auger electron - ion Coincidences using High Energy photons) is a high-resolution electron-multi-ion coincidence system optimized for gas-phase experiments in the tender (~2-10 k…
View article: Neutral Sulfur Atom Formation in Decay of Deep Core Holes in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>SF</mml:mi></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Neutral Sulfur Atom Formation in Decay of Deep Core Holes in Open
Dissociation upon sulfur K-shell excitation or ionization of SF6 is studied by sulfur L-shell emission spectroscopy using synchrotron radiation and multiconfiguration Dirac-Hartree-Fock calculations of emission energies and transition rate…
View article: Nonlinear spectral dispersion in resonant Auger scattering from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>SF</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math> for studying nuclear potentials and dynamics
Nonlinear spectral dispersion in resonant Auger scattering from for studying nuclear potentials and dynamics Open
In this study, we integrate experimental observations and theoretical models to elucidate the complex phenomena observed in the resonant S K-edge Auger scattering spectra of the SF6 molecule. A two-dimensional spectral map, constructed of …
View article: X-ray-Induced Molecular Catapult: Ultrafast Dynamics Driven by Lightweight Linkages
X-ray-Induced Molecular Catapult: Ultrafast Dynamics Driven by Lightweight Linkages Open
In our work, we demonstrate that X-ray photons can initiate a "molecular catapult" effect, leading to the dissociation of chemical bonds and the formation of heavy fragments within just a few femtoseconds. We reconstruct the momenta of fra…
View article: Fluorescence-mediated postcollision interaction in x-ray photoionization of the Xe <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>K</mml:mi></mml:math> edge
Fluorescence-mediated postcollision interaction in x-ray photoionization of the Xe edge Open
International audience
View article: Ultrafast nuclear dynamics in double-core-ionized water molecules
Ultrafast nuclear dynamics in double-core-ionized water molecules Open
Double-core-hole (DCH) states in isolated-water and heavy-water molecules, resulting from the sequential absorption of two x-ray photons, have been investigated. Here, a comparison of the subsequent Auger emission spectra from the two isot…
View article: Radiationless decay spectrum of O 1s double core holes in liquid water
Radiationless decay spectrum of O 1s double core holes in liquid water Open
We present a combined experimental and theoretical investigation of the radiationless decay spectrum of an O 1s double core hole in liquid water. Our experiments were carried out using liquid-jet electron spectroscopy from cylindrical micr…
View article: MOSARIX: Multi-crystal spectrometer in the tender x-ray range at SOLEIL synchrotron
MOSARIX: Multi-crystal spectrometer in the tender x-ray range at SOLEIL synchrotron Open
We have built and commissioned a novel standalone multi-crystal x-ray spectrometer (MOSARIX) in the von Hamos configuration based on highly annealed pyrolytic graphite crystals. The spectrometer is optimized for the energy range of 2–5 keV…
View article: Ultrafast Nuclear Dynamics in Double-Core Ionized Water Molecules
Ultrafast Nuclear Dynamics in Double-Core Ionized Water Molecules Open
Double-core-hole (DCH) states in isolated water and heavy water molecules, resulting from the sequential absorption of two x-ray photons, have been investigated. A comparison of the subsequent Auger emission spectra from the two isotopes p…
View article: X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy
X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy Open
Ultrafast charge transfer along the polymer chains is triggered by a selective resonant core-excitation of the sulfur atom in P3HT films and powders. Our approach opens perspectives for studies on intra-molecular conductivity in organic mo…
View article: Auger Shake-Up Assisted Electron Recapture
Auger Shake-Up Assisted Electron Recapture Open
The presence of doubly excited states (DESs) above the core-hole ionization threshold nontrivially modulates the x-ray absorption because the participator Auger decay couples DESs to the underlying low-energy core-hole continuum. We show t…
View article: Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser
Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser Open
Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coinc…
View article: X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy
X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy Open
We explore ultrafast charge transfer (CT) resonantly induced by hard x-ray radiation in organic thiophene-based polymers at the sulfur K-edge. A combination of core-hole clock spectroscopy with real-time propagation time-dependent density …
View article: Generalization of the post-collision interaction effect from gas-phase to solid-state systems demonstrated in thiophene and its polymers
Generalization of the post-collision interaction effect from gas-phase to solid-state systems demonstrated in thiophene and its polymers Open
We demonstrate experimentally and theoretically the presence of the post-collision interaction (PCI) effect in sulfur KL2,3L2,3 Auger electron spectra measured in the gas-phase thiophene and in solid-state organic polymers: polythiophene (…
View article: Photochemical Ring-Opening Reaction of 1,3-Cyclohexadiene: Identifying the True Reactive State
Photochemical Ring-Opening Reaction of 1,3-Cyclohexadiene: Identifying the True Reactive State Open
The photochemically induced ring-opening isomerization reaction of 1,3-cyclohexadiene to 1,3,5-hexatriene is a textbook example of a pericyclic reaction and has been amply investigated with advanced spectroscopic techniques. The main open …
View article: Concerted and sequential three-body fragmentation of deep-core-ionized carbon disulfide
Concerted and sequential three-body fragmentation of deep-core-ionized carbon disulfide Open
Momentum vector correlation is a powerful tool to study molecular dissociation.
View article: Dynamics of core-excited ammonia: disentangling fragmentation pathways by complementary spectroscopic methods
Dynamics of core-excited ammonia: disentangling fragmentation pathways by complementary spectroscopic methods Open
Combining resonant Auger spectroscopy and electron–ion coincidence measurements, the complex relaxation patterns of core-excited ammonia are revealed. Decay processes leading to the same fragment but with different timescales are enlighten…
View article: Resonant Auger decay induced by the symmetry-forbidden 1<i>a</i>1<i>g</i> → 6<i>a</i>1<i>g</i> transition of the SF6 molecule
Resonant Auger decay induced by the symmetry-forbidden 1<i>a</i>1<i>g</i> → 6<i>a</i>1<i>g</i> transition of the SF6 molecule Open
Resonant Auger electron spectroscopic study at the symmetry-forbidden 1a1g→6a1g excitation below the S K-shell threshold of SF6 is reported. Partial electron yield and resonant KLL Auger spectra have been measured by using monochromatized …
View article: UV-induced dissociation of CH<sub>2</sub>BrI probed by intense femtosecond XUV pulses
UV-induced dissociation of CH<sub>2</sub>BrI probed by intense femtosecond XUV pulses Open
The ultraviolet (UV)-induced dissociation and photofragmentation of gas-phase CH 2 BrI molecules induced by intense femtosecond extreme ultraviolet (XUV) pulses at three different photon energies are studied by multi-mass ion imaging. Usin…
View article: Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase
Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase Open
2-D core-electron spectroscopy: resolving excitation and relaxation pathways.
View article: Ultrafast dissociation of ammonia: Auger Doppler effect and redistribution of the internal energy
Ultrafast dissociation of ammonia: Auger Doppler effect and redistribution of the internal energy Open
Vibrationally-resolved resonant Auger electron–photoion coincidence measurements allow observing the Auger–Doppler effect in ammonia following ultrafast dissociation. About 43% of the internal energy left in the system is transferred to vi…
View article: Electron delocalisation in conjugated sulfur heterocycles probed by resonant Auger spectroscopy
Electron delocalisation in conjugated sulfur heterocycles probed by resonant Auger spectroscopy Open
Conjugation and hyperconjugation in core-excited states of organosulfur molecules probed by a novel experimental and theoretical approach using resonant Auger spectroscopy.
View article: Inner-Shell-Ionization-Induced Femtosecond Structural Dynamics of Water Molecules Imaged at an X-Ray Free-Electron Laser
Inner-Shell-Ionization-Induced Femtosecond Structural Dynamics of Water Molecules Imaged at an X-Ray Free-Electron Laser Open
The ultrafast structural dynamics of water following inner-shell ionization is a crucial issue in high-energy radiation chemistry. We have exposed isolated water molecules to a short X-ray pulse from a free-electron laser and detected mome…
View article: Pulse Energy and Pulse Duration Effects in the Ionization and Fragmentation of Iodomethane by Ultraintense Hard X Rays
Pulse Energy and Pulse Duration Effects in the Ionization and Fragmentation of Iodomethane by Ultraintense Hard X Rays Open
The interaction of intense femtosecond x-ray pulses with molecules sensitively depends on the interplay between multiple photoabsorptions, Auger decay, charge rearrangement, and nuclear motion. Here, we report on a combined experimental an…
View article: A von Hamos spectrometer based on highly annealed pyrolytic graphite crystal in tender x-ray domain
A von Hamos spectrometer based on highly annealed pyrolytic graphite crystal in tender x-ray domain Open
We have built an x-ray spectrometer in a von Hamos configuration based on a highly annealed pyrolytic graphite crystal. The spectrometer is designed to measure x-ray emission in the range of 2–5 keV. A spectral resolution E/ΔE of 4000 was …
View article: Unified treatment of recoil and Doppler broadening in molecular high-energy photoemission
Unified treatment of recoil and Doppler broadening in molecular high-energy photoemission Open
Doppler and recoil effects are an integral part of the photoemission process at the high kinetic energies reached in hard x-ray photo-electron spectroscopy (HAXPES) and have a major effect on the observed lineshape, resulting in broadening…
View article: Nonstatistical behavior of the photoionization of spin–orbit doublets
Nonstatistical behavior of the photoionization of spin–orbit doublets Open
The photoionization branching ratios of spin–orbit doublets are studied both experimentally and theoretically at energies several keV above threshold. The results show significant relativistic effects for Ar 2 p in the autoionizing region …
View article: The O K<sup>−2</sup>V spectrum of CO: the influence of the second core-hole
The O K<sup>−2</sup>V spectrum of CO: the influence of the second core-hole Open
A K−2V photoelectron spectrum of the CO molecule, showing several core-ionized core-excited states, has been recorded and the different spectral features have been interpreted in terms of their direct or conjugate nature.