activity
20232026
most citedDopant ionization and efficiency of ion and electron ejection from helium nanodroplets

10 citations · 35 across the 14 of their papers we have counts for

collaborators

15 papers

physics.plasm-ph2026

PIConGPU modeling of nanoplasma formation in helium nanodroplets irradiated by intense femtosecond laser pulses

Cristian Medina, Klaus Steiniger, Brian Edward Marre +15

Helium nanodroplets provide a unique and versatile platform for investigating strong-field-driven nanoplasma dynamics. In this work, we present large-scale, GPU-accelerated particl…

physics.chem-ph2026

Valence Ionization Of Water Clusters Formed Inside Helium Nanodroplets

Subhendu De, Sivarama Krishnan, Niklas Sheel +5

The ionization mechanisms of small HO/DO clusters embedded in helium nanodroplets (HNDs) irradiated with extreme ultraviolet photons of energy = 21.6 eV are investigat…

physics.chem-ph2025

Tracking Microhydration of the NaCl Rocksalt Molecule in Helium Nanodroplets by Penning Ionization Electron Spectroscopy

Ltaief Ben Ltaief, Keshav Sishodia, Robert Richter +6

The microhydration of rock salt (NaCl) molecules was investigated using high-resolution Penning ionization electron spectroscopy (PIES) in helium nanodroplets. Although model calcu…

physics.ins-det2025

Studies of ultrafast dynamics in substrate-free nanoparticles at ELI using Timepix3 optical camera

Dmitrij Ševaev, Andrei Nomerotski, Peter Švihra +7

We present a novel application of the Timepix3 optical camera (Tpx3Cam) for investigating ultrafast dynamics in substrate-free nanoparticles at the Extreme Light Infrastructure Eur…

physics.atm-clus2025

XUV fluorescence as a probe of interatomic Coulombic decay of resonantly excited He nanodroplets

Keshav Sishodia, Ltaief Ben Ltaief, Niklas Scheel +15

Superfluid He nanodroplets resonantly excited by extreme ultraviolet (XUV) pulses exhibit complex relaxation dynamics, including the formation of metastable excited He atoms tr…

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.atm-clus2024

Interatomic Coulombic decay in lithium-doped large helium nanodroplets induced by photoelectron impact excitation

L. Ben Ltaief, K. Sishodia, J. D. Asmussen +5

Irradiation of condensed matter with ionizing radiation generally causes direct photoionization as well as secondary processes that often dominate the ionization dynamics. Here, la…

physics.atm-clus2024

Fragmentation of Water Clusters Formed in Helium Nanodroplets by Charge Transfer and Penning Ionization

S. De, A. R. Abid, J. D. Asmussen +6

Helium nanodroplets ("HNDs") are widely used for forming tailor-made clusters and molecular complexes in a cold, transparent, and weakly-interacting matrix. Characterization of emb…

physics.atom-ph2023

Observation of interatomic Coulombic decay induced by double excitation of helium in nanodroplets

B. Bastian, J. D. Asmussen, L. Ben Ltaief +9

Interatomic Coulombic decay (ICD) plays a crucial role in weakly bound complexes exposed to intense or high-energy radiation. So far, neutral or ionic atoms or molecules have been…

physics.atom-ph2023

Spectroscopically resolved resonant interatomic Coulombic decay in photoexcited large He nanodroplets

L. Ben Ltaief, K. Sishodia, R. Richter +8

Interatomic Coulombic decay (ICD) processes play a crucial role in weakly bound complexes exposed to intense or high-energy radiation. Using large helium nanodroplets, we demonstra…

physics.atm-clus2023★ 7 cited

Secondary ionization of pyrimidine nucleobases and their microhydrated derivatives in helium nanodroplets

Jakob D. Asmussen, Abdul R. Abid, Akgash Sundaralingam +7

Radiation damage in biological systems by ionizing radiation is predominantly caused by secondary processes such as charge and energy transfer leading to the breaking of bonds in D…

physics.atm-clus2023★ 10 cited

Dopant ionization and efficiency of ion and electron ejection from helium nanodroplets

Jakob D. Asmussen, Ltaief Ben Ltaief, Keshav Sishodia +5

Photoionization spectroscopy and mass spectrometry of doped helium (He) nanodroplets rely on the ability to efficiently detect ions and/or electrons. Using a commercial quadrupole…

physics.atm-clus2023★ 9 cited

Electron energy loss and angular asymmetry induced by elastic scattering in helium droplets

Jakob D. Asmussen, Keshav Sishodia, Björn Bastian +10

Helium nanodroplets are ideal model systems to unravel the complex interaction of condensed matter with ionizing radiation. Here we study the effect of purely elastic electron scat…

physics.atm-clus2023★ 9 cited

Efficient Indirect Interatomic Coulombic Decay Induced by Photoelectron Impact Excitation in Large He Nanodroplets

L. Ben Ltaief, K. Sishodia, S. Mandal +7

Ionization of matter by energetic radiation generally causes complex secondary reactions which are hard to decipher. Using large helium nanodroplets irradiated by XUV photons, we s…