FLASH and the FLASH2020+ project—current status and upgrades for the free-electron laser in Hamburg at DESY

M Beye, M Gühr, I Hartl, E Plönjes, L Schaper… - The European Physical …, 2023 - Springer
The free-electron laser in Hamburg, FLASH, is the first extreme ultra-violet and soft X-ray
free-electron laser (FEL) user facility and has been continuously upgraded since its start in …

Addressing electronic and dynamical evolution of molecules and molecular clusters: DFTB simulations of energy relaxation in polycyclic aromatic hydrocarbons

M Rapacioli, MY Buey, F Spiegelman - Physical Chemistry Chemical …, 2024 - pubs.rsc.org
We present a review of the capabilities of the density functional based Tight Binding (DFTB)
scheme to address the electronic relaxation and dynamical evolution of molecules and …

Low-Energy Transformation Pathways between Naphthalene Isomers

G Salomon, N Tarrat, JC Schön, M Rapacioli - Molecules, 2023 - mdpi.com
The transformation pathways between low-energy naphthalene isomers are studied by
investigating the topology of the energy landscape of this astrophysically relevant molecule …

Distinguishing the XUV-induced Coulomb explosion dynamics of iodobenzene using covariance analysis

T Walmsley, F Allum, JR Harries… - Journal of Physics B …, 2024 - iopscience.iop.org
The primary and secondary fragmentation dynamics of iodobenzene following its ionization
at 120 eV were determined using three-dimensional velocity map imaging and covariance …

Laser-induced fragmentation of coronene cations

S Panchagnula, J Kamer, A Candian… - Physical Chemistry …, 2024 - pubs.rsc.org
Polycyclic aromatic hydrocarbons are an important component of the interstellar medium of
galaxies and photochemistry plays a key role in the evolution of these species in space …

Ultrafast dynamics of fluorene initiated by highly intense laser fields

D Garg, P Chopra, JWL Lee, DS Tikhonov… - Physical Chemistry …, 2024 - pubs.rsc.org
We present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon
fluorene initiated by an intense femtosecond near-infrared laser pulse (810 nm) and probed …

Scaling analysis parameters in 3D-focusing velocity map imaging

R Wu, B Ding, Y Feng, K Wu, X Jin… - … Science and Technology, 2023 - iopscience.iop.org
Velocity map imaging spectrometer is a powerful tool for measuring the two-dimensional
momenta of charged particles in dissociative photoionization processes. By combining a …

Coincidence mass spectrometry study of double ionization of pyrene by 70 eV electron impact

PJM van der Burgt, ML Gradziel - Physical Chemistry Chemical …, 2024 - pubs.rsc.org
We have performed coincidence mass spectrometry of fragmentation of pyrene molecules
by 70 eV electron impact. Ionized fragments have been mass selected using a reflectron …

Ultrafast dynamics of polycyclic aromatic hydrocarbons initiated by highly intense laser fields

D Garg, P Chopra, JWL Lee, D Tikhonov, S Kumar… - 2023 - chemrxiv.org
We present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon
fluorene initiated by an intense femtosecond infrared laser pulse and probed by a weak …

On the thermodynamic stability of polycations

DS Tikhonov, JWL Lee, M Schnell - 2024 - chemrxiv.org
We present a simple approximation to estimate the largest charge that a given molecule can
hold until fragmentation into smaller charged species becomes more energetically …