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Ion and Electron Momentum Distributions from Single and Double Ionization of Helium Induced by Compton Scattering
M. Kircher, F. Trinter, S. Grundmann +18
We present the momentum distributions of the nucleus and of the electrons from double ionization of the helium atom by Compton scattering of photons with keV. We find that…
Magnetic-field effect in high-order above-threshold ionization
Kang Lin, Simon Brennecke, Hongcheng Ni +15
We experimentally and theoretically investigate the influence of the magnetic component of an electromagnetic field on high-order above-threshold ionization of xenon atoms driven b…
Photoelectron energy peaks shift against the radiation pressure in strong field ionization
Kang Lin, Sebastian Eckart, Alexander Hartung +8
The photoelectric effect describes the ejection of an electron upon absorption of one or several photons. The kinetic energy of this electron is determined by the photon energy red…
Measuring the photoelectron emission delay in the molecular frame
Jonas Rist, Kim Klyssek, Nikolay M. Novikovskiy +22
If matter absorbs a photon of sufficient energy it emits an electron. The question of the duration of the emission process has intrigued scientists for decades. With the advent of…
Non-adiabatic Strong Field Ionization of Atomic Hydrogen
Daniel Trabert, Nils Anders, Simon Brennecke +7
We present experimental data on the non-adiabatic strong field ionization of atomic hydrogen using elliptically polarized femtosecond laser pulses at a central wavelength of 390 nm…
Fourfold Differential Photoelectron Circular Dichroism
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s-photoelectrons in coincidence with fragment i…
Photoelectron circular dichroism of O 1-photoelectrons of uniaxially oriented trifluoromethyloxirane: Energy dependence and sensitivity to molecular configuration
G. Nalin, K. Fehre, F. Trinter +25
The photoelectron circular dichroism (PECD) of the O 1s-photoelectrons of trifluoromethyloxirane(TFMOx) is studied experimentally and theoretically for different photoelectron kine…
High-Energy Molecular-Frame Photoelectron Angular Distributions: A Molecular Bond-Length Ruler
Isabel Vela-Peréz, Fukiko Ota, Abir Mhamdi +24
We present an experimental and theoretical study of core-level ionization of small hetero- and homo-nuclear molecules employing circularly polarized light and address molecular-fra…
Photon-momentum-induced molecular dynamics in photoionization of N at keV
M. Kircher, J. Rist, F. Trinter +16
We investigate K-shell ionization of N at 40 keV photon energy. Using a COLTRIMS reaction microscope we determine the vector momenta of the photoelectron, the Auger electron an…
Closed-loop recycling of rare liquid samples for gas-phase experiments
K. Fehre, M. Pitzer, F. Trinter +4
Many samples of current interest in molecular physics and physical chemistry exist in the liquid phase and are vaporized for the use in gas cells, diffuse gas targets or molecular…
Recoil-Induced Asymmetry of Nondipole Molecular Frame Photoelectron Angular Distributions in the Hard X-ray Regime
M. Kircher, J. Rist, F. Trinter +15
We investigate angular emission distributions of the 1s-photoelectrons of N ionized by linearly polarized synchrotron radiation at keV. As expected, nondipole contribu…
A new route for enantio-sensitive structure determination by photoelectron scattering on molecules in the gas phase
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
X-ray as well as electron diffraction are powerful tools for structure determination of molecules. Studies on randomly oriented molecules in the gas-phase address cases in which mo…