F. Penent
YOU?
Author Swipe
View article: Postcollision interaction in the liquid phase: The role of electron scattering
Postcollision interaction in the liquid phase: The role of electron scattering Open
We report a detailed study of post-collision interaction (PCI) in a liquid medium. We investigate PCI for the Auger KLL electrons of solvated Cl$^-$, K$^+$ and Ca$^{2+}$. All three isoelectronic ions exhibit a very similar PCI behavior, wh…
View article: Neutralization of Multiply Charged Ground-State Ions by Collective Electron Transfer from an Environment
Neutralization of Multiply Charged Ground-State Ions by Collective Electron Transfer from an Environment Open
Highly charged cations are omnipresent species after the interaction of high-energy or high-intensity light with matter. When embedded in environments, the mechanism and outcome of the redistribution of the cation’s charge are crucial for …
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: 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: Auger photoelectron coincidence spectroscopy of molecules adsorbed on a gold wire surface
Auger photoelectron coincidence spectroscopy of molecules adsorbed on a gold wire surface Open
In this paper, we present the results on Auger/photoelectron coincidence spectroscopy (APECS) of molecules—propanethiol and bovine serum albumin (BSA)-deposited on a gold wire surface, using a magnetic bottle electron time-of-flight spectr…
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: Postcollision interaction in sequential x-ray radiative and Auger decays after atomic inner-shell photoionization
Postcollision interaction in sequential x-ray radiative and Auger decays after atomic inner-shell photoionization Open
International audience
View article: Search for the interatomic Auger effect in Nitrous Oxide
Search for the interatomic Auger effect in Nitrous Oxide Open
The interatomic Auger effect following O 1s ionization in N2O has been experimentally investigated using multi-electron coincidence spectroscopy. The expected transition energies have been established by comparison to the measured N 1s−1v−…
View article: First (e,e) coincidence measurements on solvated sodium benzoate in water using a magnetic bottle time-of-flight spectrometer
First (e,e) coincidence measurements on solvated sodium benzoate in water using a magnetic bottle time-of-flight spectrometer Open
Sodium benzoate molecules solvated in water are studied using coincidence electron spectroscopy coupled with a liquid microjet device.
View article: Post Collision Interaction effect studied of solvated ions ionized in K shell
Post Collision Interaction effect studied of solvated ions ionized in K shell Open
International audience
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: Coupling a magnetic bottle multi-electron spectrometer with a liquid micro-jet device: a comprehensive study of solvated sodium benzoate at the O 1 <i>s</i> threshold
Coupling a magnetic bottle multi-electron spectrometer with a liquid micro-jet device: a comprehensive study of solvated sodium benzoate at the O 1 <i>s</i> threshold Open
We have developed a magnetic bottle time-of-flight electron-electron coincidence spectrometer to perform measurements on solvated molecules in a liquid micro-jet. We present here the first results obtained after ionization of the oxygen 1 …
View article: A modified magnetic bottle electron spectrometer for the detection of multiply charged ions in coincidence with all correlated electrons: decay pathways to Xe<sup>3+</sup> above xenon-4d ionization threshold
A modified magnetic bottle electron spectrometer for the detection of multiply charged ions in coincidence with all correlated electrons: decay pathways to Xe<sup>3+</sup> above xenon-4d ionization threshold Open
New magnet design of a magnetic bottle electron spectrometer allowing the detection of multiply charged ions in coincidence with n electrons. Electrons spectra obtained without and with filtering by coincidence with Xe n + ions.
View article: Specific chemical bond relaxation unraveled by analysis of shake-up satellites in the oxygen single site double core hole spectrum of CO<sub>2</sub>
Specific chemical bond relaxation unraveled by analysis of shake-up satellites in the oxygen single site double core hole spectrum of CO<sub>2</sub> Open
Important electronic relaxation and reorganization effects induced by single site double core hole formation and associated shake-up excitation are investigated in CO 2 by means of an highly accurate computation method using non orthogonal…
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: Specific chemical bond relaxation unravelled by analysis of shake-up satellites in the oxygen single site double core hole spectrum of CO$_2$
Specific chemical bond relaxation unravelled by analysis of shake-up satellites in the oxygen single site double core hole spectrum of CO$_2$ Open
We developed recently [A. Ferté, et al., J. Phys. Chem. Lett. 11, 4359 (2020)] a method to compute single site double core hole (ssDCH or K$^{-2}$) spectra. We refer to that method as NOTA+CIPSI. In the present paper this method is applied…
View article: Giant and specific electronic transfer in single site double core hole shake-up states of CO2 unraveled through non-orthogonal basis set method
Giant and specific electronic transfer in single site double core hole shake-up states of CO2 unraveled through non-orthogonal basis set method Open
We recently developed a method dubbed NOTA+CIPSI [A. Ferte, et al., J. Phys. Chem. Lett. 11, 4359 (2020)] to compute single site double core hole (ssDCH or K-2) spectra, that is now applied to the O K-2 spectrum of the CO2 molecule, and fo…
View article: Single photon simultaneous K-shell ionization/excitation in C <sub>6</sub> H <sub>6</sub> : experiment and theory
Single photon simultaneous K-shell ionization/excitation in C <sub>6</sub> H <sub>6</sub> : experiment and theory Open
Single photon simultaneous core ionization/core excitation (K −2 V) of the Benzene molecule has been observed experimentally, using synchrotron radiation, by electron coincidence spectroscopy with a magnetic bottle time-of-flight electron …
View article: Modification of a Cylindrical Mirror Analyzer for High Efficiency Photoelectron Spectroscopy on Ion Beams
Modification of a Cylindrical Mirror Analyzer for High Efficiency Photoelectron Spectroscopy on Ion Beams Open
An existing cylindrical mirror analyzer (CMA) that was initially equipped with eight channeltrons detectors has been modified to install large micro-channel plate detectors to perform parallel detection of electrons on an energy range corr…
View article: Advanced Computation Method for Double Core Hole Spectra: Insight into the Nature of Intense Shake-up Satellites
Advanced Computation Method for Double Core Hole Spectra: Insight into the Nature of Intense Shake-up Satellites Open
Double core hole spectroscopy is an ideal framework for investigating photoionization shake-up satellites. Their important intensity in a single site double core hole (ssDCH) spectrum allows the exploration of the subtle mix of relaxation …
View article: MOSARIX: Progress Report
MOSARIX: Progress Report Open
MOSARIX is a collaborative project between three research group in Sorbonne University to build a x-ray spectrometer (2-5 keV) portable to large scale facilities with high efficiency and good resolution. X-ray spectroscopy and coincidences…
View article: Core-hole spectator Auger decay
Core-hole spectator Auger decay Open
International audience
View article: Auger decay of Rubidum atom after 3d-shell ionization
Auger decay of Rubidum atom after 3d-shell ionization Open
Synopsis We present here the different Auger decay paths following 3d inner-shell ionization of Rubidium atom and we observe the peculiar behaviour and correlation effects due to the outer, unpaired 5s electron. This electron can be submit…
View article: Multi-electron/ion coincidence spectroscopy in Xe triple ionization
Multi-electron/ion coincidence spectroscopy in Xe triple ionization Open
Synopsis The study of atomic multiple photoionization by a single photon can be performed by detecting in coincidence all the corresponding electrons with a magnetic bottle time of flight spectrometer. To reveal minor triple ionization cha…
View article: Double-core ionization photoelectron spectroscopy of C6H6: Breakdown of the “intuitive” <i>ortho</i>-<i>meta</i>-<i>para</i> binding energy ordering of K−1K−1 states
Double-core ionization photoelectron spectroscopy of C6H6: Breakdown of the “intuitive” <i>ortho</i>-<i>meta</i>-<i>para</i> binding energy ordering of K−1K−1 states Open
Single-site Double-Core Hole (ss-DCH or K−2) and two-site Double-Core Hole (ts-DCH or K−1K−1) photoelectron spectra including satellite lines were experimentally recorded for the aromatic C6H6 molecule using the synchrotron radiation and m…
View article: Evidence of Extreme Ultraviolet Superfluorescence in Xenon
Evidence of Extreme Ultraviolet Superfluorescence in Xenon Open
We present a comprehensive experimental and theoretical study on superfluorescence in the extreme ultraviolet wavelength regime. Focusing a free-electron laser pulse in a cell filled with Xe gas, the medium is quasi-instantaneously populat…
View article: Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics
Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics Open
The photodissociation dynamics of CH3I and CH2ClI at 272 nm were investigated by time-resolved Coulomb explosion imaging, with an intense non-resonant 815 nm probe pulse. Fragment ion momenta over a wide m/z range were recorded simultaneou…
View article: Time-resolved inner-shell photoelectron spectroscopy: From a bound molecule to an isolated atom
Time-resolved inner-shell photoelectron spectroscopy: From a bound molecule to an isolated atom Open
Due to its element and site specificity, inner-shell photoelectron spectroscopy is a widely used technique to probe the chemical structure of matter. Here, we show that time-resolved inner-shell photoelectron spectroscopy can be employed t…