237 citations · 3k across the 111 of their papers we have counts for
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Prevailing features of X-ray induced molecular electron spectra revealed with fullerenes
Abraham Camacho Garibay, Ulf Saalmann, Jan M. Rost
Intense X-ray photo-absorption from short and intense pulses by a molecule triggers complicated electron and subsequently ion dynamics leading to photo-electron spectra which are d…
Proton ejection from molecular hydride clusters exposed to strong X-ray pulses
Pierfrancesco Di Cintio, Ulf Saalmann, Jan-Michael Rost
Clusters consisting of small molecules containing hydrogen do eject fast protons when illuminated by short X-ray pulses. A suitable overall charging of the cluster controlled by th…
Spatial correlations in finite samples revealed by Coulomb explosion
Ulf Saalmann, Alexey Mikaberidze, Jan M. Rost
We demonstrate that fast removal of many electrons uncovers initial correlations of atoms in a finite sample through a pronounced peak in the kinetic-energy spectrum of the explodi…
Many-electron dynamics triggered by massively parallel ionization
Christian Gnodtke, Ulf Saalmann, Jan-Michael Rost
Massively parallel ionization of many atoms in a cluster or bio-molecule is identified as new phenomenon of light-matter interaction which becomes feasible through short and intens…
Complete dynamics of H2+ in strong laser fields
J. Handt, S. M. Krause, J. M. Rost +3
Based on a combined quantum-classical treatment, a complete study of the strong field dynamics of H2+, i.e. including all nuclear and electronic DOF as well as dissociation and ion…
Dynamics of photo-activated Coulomb complexes
Christian Gnodtke, Ulf Saalmann, Jan-Michael Rost
Intense light with frequencies above typical atomic or molecular ionization potentials as provided by free-electron lasers couples many photons into extended targets such as cluste…
Ionization and charge migration through strong internal fields in clusters exposed to intense X-ray pulses
Christian Gnodtke, Ulf Saalmann, Jan M. Rost
A general scenario for electronic charge migration in finite samples illuminated by an intense laser pulse is given. Microscopic calculations for neon clusters under strong short p…
Laser-driven nanoplasmas in doped helium droplets: Local ignition and anisotropic expansion
Alexey Mikaberidze, Ulf Saalmann, Jan M. Rost
Doping a helium nanodroplet with a tiny xenon cluster of a few atoms only, sparks complete ionization of the droplet at laser intensities below the ionization threshold of helium a…
Rescattering for extended atomic systems
Ulf Saalmann, Jan M. Rost
Laser-driven rescattering of electrons is the basis of many strong-field phenomena in atoms and molecules. Here, we will show how this mechanism operates in extended atomic systems…
Energy absorption of xenon clusters in helium nanodroplets under strong laser pulses
Alexey Mikaberidze, Ulf Saalmann, Jan M. Rost
Energy absorption of xenon clusters embedded in helium nanodroplets from strong femtosecond laser pulses is studied theoretically. Compared to pure clusters we find earlier and mor…
Tracing non-equilibrium plasma dynamics on the attosecond timescale in small clusters
Ulf Saalmann, Ionuţ Georgescu, Jan M. Rost
It is shown that the energy absorption of a rare-gas cluster from a vacuum-ultraviolet (VUV) pulse can be traced with time-delayed extreme-ultraviolet (XUV) attosecond probe pulses…
Attosecond resolved charging of clusters
Ionut Georgescu, Ulf Saalmann, Jan M. Rost
Attosecond laser pulses open the door to resolve microscopic electron dynamics in time. Experiments performed include the decay of a core hole, the time-resolved measurement of pho…
Clusters under strong VUV pulses: A quantum-classical hybrid-description incorporating plasma effects
Ionut Georgescu, Ulf Saalmann, Jan M. Rost
The quantum-classical hybrid-description of rare-gas clusters interacting with intense light pulses which we have developed is described in detail. Much emphasis is put on the trea…
Electron dynamics in strong laser pulse illumination
Ulf Saalmann, Jan M. Rost
We analyze the dynamics of up to electrons resulting from illuminating a Xenon cluster with 9093 atoms with intense laser pulses of different length and peak intensity. Inte…
Surface plasma resonance in small rare gas clusters by mixing IR and VUV laser pulses
Ch. Siedschlag, J. M. Rost
The ionization dynamics of a Xenon cluster with 40 atoms is analyzed under a pum p probe scenario of laser pulses where an infrared laser pulse of 50 fs length follows with a well…
Small rare gas clusters in soft X-ray pulses
Ch. Siedschlag, J. M. Rost
We develop a microscopic model for the interaction of small rare gas clusters with soft X-ray radiation. It is shown that, while the overall charging of the clusters is rather low,…
Ionization of clusters in intense laser pulses through collective electron dynamics
Ulf Saalmann, Jan-Michael Rost
The motion of electrons and ions in medium-sized rare gas clusters (1000 atoms) exposed to intense laser pulses is studied microscopically by means of classical molecular dynamics…
Optimal representations of quantum states by gaussians in phase space
Anatole Kenfack, Jan M Rost, Alfredo M Ozorio de Almeida
A two-step optimization is proposed to represent an arbitrary quantum state to a desired accuracy with the least number of gaussians in phase space. The Husimi distribution of the…
Ionization of clusters in strong X-ray laser pulses
Ulf Saalmann, Jan M Rost
The effect of intense X-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ioniza…
Electron release of rare gas atom clusters under an intense laser pulse
Christian Siedschlag, Jan M. Rost
Calculating the energy absorption of atomic clusters as a function of the laser pulse length we find a maximum for a critical . We show that can be linked to an opti…
Spurious oscillations from local self-interaction correction in high energy photoionization calculations for metal clusters
M. E. Madjet, Himadri S. Chakraborty, Jan-M. Rost
We find that for simple metal clusters a single-electron description of the ground state employing self-interaction correction (SIC) in the framework of local-density approximation…
Time dependent energy absorption of atomic clusters from an intense laser pulse
Christian Siedschlag, Jan M Rost
For the energy absorption of atomic clusters as a function of the laser pulse duration we find a similar behavior as it has been observed for metallic clusters [Köller et al., Phys…