activity
20192026
most citedPropagation-assisted generation of intense few-femtosecond high-harmonic pulses

17 citations · 30 across the 9 of their papers we have counts for

collaborators

11 papers

physics.chem-ph2026

X-ray Driven Trihydrogen Formation on Silica Nanosurfaces

Samuel Sahel-Schackis, Adam Summers, Ritika Dagar +29

The trihydrogen cation () initiates the ion-molecule reactions that build molecular complexity in interstellar space. Whether its canonical formation reaction, $\ma…

physics.atom-ph2025★ 1 cited

Enhanced One-Color-Two-Photon Resonant Ionization in Highly Charged Ions by Fine-Structure Effects

Moto Togawa, Chunhai Lyu, Chintan Shah +25

Ultraintense pulses from X-ray free-electron lasers can drive, within femtoseconds, multiple processes in the inner shells of atoms and molecules in all phases of matter. The ensui…

physics.optics2025

Dichography: Two-frame Ultrafast Imaging from a Single Diffraction Pattern

Linos Hecht, Andre Al Haddad, Björn Bastian +47

We experimentally demonstrate that pairs of time-delayed ultrabright and ultrashort X-ray pulses of two different colors, delivered by modern X-ray Free Electron Lasers, can provid…

physics.optics2025

Model-free pattern separation of two-color ultrafast X-ray diffraction

Linos Hecht, Yevheniy Ovcharenko, Asbjørn Ø. Lægdsmand +28

Two-color X-ray imaging with Free Electron Laser pulses offers a powerful approach for probing ultrafast structural dynamics in nanoscale systems, combining (near-)atomic spatial r…

physics.optics2025

Laser-induced transient opacity in helium nanodroplets probed by single-shot coherent diffraction

Julian C. Schäfer-Zimmermann, Tom von Scheven, Katharina Kolatzki +13

Single-shot coherent diffractive imaging (CDI) with intense short-wavelength light pulses enables the structural characterization of individual nanoparticles in free flight with hi…

physics.chem-ph2025★ 10 cited

Unraveling the relaxation dynamics of Uracil: insights from time-resolved X-ray photoelectron spectroscopy

Davide Faccialà, Matteo Bonanomi, Bruno Nunes Cabral Tenorio +26

We report a study of the electronic and nuclear relaxation dynamics of the photoexcited RNA base uracil in the gas phase, using time-resolved core level photoelectron spectroscopy…

physics.optics2024★ 2 cited

SPRING: an effective and reliable framework for image reconstruction in single-particle Coherent Diffraction Imaging

Alessandro Colombo, Mario Sauppe, Andre Al Haddad +40

Coherent Diffraction Imaging (CDI) is an experimental technique to gain images of isolated structures by recording the light scattered off the sample. In principle, the sample dens…

physics.chem-ph2024

X-ray Coulomb explosion imaging reveals role of molecular structure in internal conversion

Till Jahnke, Sebastian Mai, Surjendu Bhattacharyya +26

Molecular photoabsorption results in an electronic excitation/ionization which couples to the rearrangement of the nuclei. The resulting intertwined change of nuclear and electroni…

cond-mat.mes-hall2023

Generation of Large Vortex-Free Superfluid Helium Nanodroplets

Anatoli Ulmer, Andrea Heilrath, Björn Senfftleben +38

Superfluid helium nanodroplets are an ideal environment for the formation of metastable, self-organized dopant nanostructures. However, the presence of vortices often hinders their…

physics.optics2020★ 17 cited

Propagation-assisted generation of intense few-femtosecond high-harmonic pulses

B. Major, M. Kretschmar, O. Ghafur +11

The ongoing development of intense high-harmonic generation (HHG) sources has recently enabled highly nonlinear ionization of atoms by the absorption of at least 10 extreme-ultravi…

physics.atom-ph2019

Highly nonlinear ionization of atoms induced by intense high-harmonic pulses

Björn Senfftleben, Martin Kretschmar, Andreas Hoffmann +7

Intense extreme-ultraviolet (XUV) pulses enable the investigation of XUV-induced nonlinear processes and are a prerequisite for the development of attosecond pump - attosecond prob…