272 citations · 866 across the 15 of their papers we have counts for
15 papers
X-ray photoelectron spectroscopy of Ar and Kr clusters formed in He nanodroplets
N. S. Blaj, N. Scheel, R. Rajni +7
We report the first soft x-ray photoelectron spectroscopy (XPS) measurements of Ar and Kr clusters formed inside superfluid helium nanodroplets (HNDs) through consecutive pickup of…
Ultrafast Nuclear Dynamics in Double-Core Ionized Water Molecules
Iyas Ismail, Ludger Inhester, Tatiana Marchenko +30
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 th…
Ångstrom depth resolution with chemical specificity at the liquid-vapor interface
R. Dupuy, J. Filser, C. Richter +13
The determination of depth profiles across interfaces is of primary importance in many scientific and technological areas. Photoemission spectroscopy is in principle well suited fo…
Correlation Driven Transient Hole Dynamics Resolved in Space and Time in the Isopropanol Molecule
T. Barillot, O. Alexander, B. Cooper +46
The possibility of suddenly ionized molecules undergoing extremely fast electron hole dynamics prior to significant structural change was first recognized more than 20 years ago an…
Clocking Auger Electrons
D. C. Haynes, M. Wurzer, A. Schletter +34
Intense X-ray free-electron lasers (XFELs) can rapidly excite matter, leaving it in inherently unstable states that decay on femtosecond timescales. As the relaxation occurs primar…
Photoionisation of Ca ions in the valence-energy region 20eV~--~56eV : experiment and theory
A Mueller, S Schippers, R A Phaneuf +8
Relative cross sections for the valence shell photoionisation (PI) of ground level and metastable Ca ions were measured with high energy resolution by usi…
Femtosecond profiling of shaped X-ray pulses
M. C. Hoffmann, I. Grguraš, C. Behrens +20
Arbitrary manipulation of the temporal and spectral properties of X-ray pulses at free-electron lasers (FELs) would revolutionize many experimental applications. At the Linac Coher…
Machine learning applied to single-shot x-ray diagnostics in an XFEL
A. Sanchez-Gonzalez, P. Micaelli, C. Olivier +39
X-ray free-electron lasers (XFELs) are the only sources currently able to produce bright few-fs pulses with tunable photon energies from 100 eV to more than 10 keV. Due to the stoc…
Imaging Molecular Structure through Femtosecond Photoelectron Diffraction on Aligned and Oriented Gas-Phase Molecules
R. Boll, A. Rouzee, M. Adolph +49
This paper gives an account of our progress towards performing femtosecond time-resolved photoelectron diffraction on gas-phase molecules in a pump-probe setup combining optical la…
Toward atomic resolution diffractive imaging of isolated molecules with x-ray free-electron lasers
Stephan Stern, Lotte Holmegaard, Frank Filsinger +25
We give a detailed account of the theoretical analysis and the experimental results of an x-ray-diffraction experiment on quantum-state selected and strongly laser-aligned gas-phas…
X-ray diffraction from isolated and strongly aligned gas-phase molecules with a free-electron laser
Jochen Küpper, Stephan Stern, Lotte Holmegaard +52
We report experimental results on x-ray diffraction of quantum-state-selected and strongly aligned ensembles of the prototypical asymmetric rotor molecule 2,5-diiodobenzonitrile us…
Double core hole production in N2: Beating the Auger clock
L. Fang, M. Hoener, O. Gessner +16
We investigate the creation of double K-shell holes in N2 molecules via sequential absorption of two photons on a timescale shorter than the core-hole lifetime by using intense x-r…
Delayed Ultrafast X-ray Auger Probing (DUXAP) of Nucleobase Ultraviolet Photoprotection
B. K. McFarland, J. P. Farrell, S. Miyabe +28
We present a new method for ultrafast spectroscopy of molecular photoexcited dynamics. The technique uses a pair of femtosecond pulses: a photoexcitation pulse initiating excited s…
Experimental Verification of the Chemical Sensitivity of Two-Site Double Core-Hole States Formed by an X-ray FEL
P. Salen, P. van der Meulen, H. T. Schmidt +16
We have performed X-ray two-photon photoelectron spectroscopy (XTPPS) using the Linac Coherent Light Source (LCLS) X-ray free-electron laser (FEL) in order to study double core-hol…
Solid-to-solid phase transition from amorphous carbon to graphite nanocrystal induced by intense femtosecond x-ray pulses
J. Gaudin, J. Chalupský, M. Toufarová +22
We present the results of an experiment where amorphous carbon was irradiated by femtosecond x-ray free electron laser pulses. The 830 eV laser pulses induce a phase transition in…