59 citations · 136 across the 10 of their papers we have counts for
10 papers
Charge-State Dependence of Electronic Excitations in keV Ions Transmitted Through Solids Probed by Ion-Photon Coincidence Measurements
Kevin Vomschee, Radek Holeňák, Svenja Lohmann +2
Investigating the electronic excitations caused by light keV ions in matter contributes to a better understanding of materials modification such as space weathering or plasma-wall…
Quantitative Analysis of Composition and Contamination of Atomically Thin Materials by Recoil-Projectile Coincidence in Ion Transmission
Carolin Frank, Kevin Vomschee, Tuan Thien Tran +6
Surface contamination strongly affects the intrinsic properties of nanoscale materials, making its reliable identification and quantification crucial for both accurate experimental…
Mobility of single vacancies and adatoms in graphene at room temperature
Tuan T. Tran, Per O. Å. Persson, Ngan Pham +2
We investigate the mobility of structural defects, adatoms, and defect-adatom combinations in self-supporting graphene subjected to keV ion irradiation. In the first scenario, homo…
Trajectory dependence of electronic energy-loss straggling at keV ion energies
Svenja Lohmann, Radek Holeňák, Pedro L. Grande +1
We have measured the electronic energy-loss straggling of protons, helium, boron and silicon ions in silicon using a transmission time-of-flight approach. Ions with velocities betw…
On the correlation of angular distributions of keV ions and trajectory-dependent electronic excitations in transmission channelling geometry
Radek Holeňák, Svenja Lohmann, Kristina Komander +1
We use energy discrimination of keV ions transmitted through a thin, single-crystalline silicon membrane to correlate specific angular distribution patterns formed in channelling g…
Simultaneous assessment of energy, charge state and angular distribution for medium energy ions interacting with ultra-thin self-supporting targets: a time-of-flight approach
R. Holeňák, S. Lohmann, F. Sekula +1
We demonstrate simultaneous measurements of the charge state, energy and angular distribution of keV ions in transmission experiments through self-supporting foils. Using a time-of…
Trajectory-dependent electronic excitations by light and heavy ions around and below the Bohr velocity
Svenja Lohmann, Radek Holeňák, Daniel Primetzhofer
We present experiments demonstrating trajectory-dependent electronic excitations at low ion velocities, where ions are expected to primarily interact with delocalized valence elect…
Contrast modes in a 3D ion transmission approach at keV energies
R. Holeňák, S. Lohmann, D. Primetzhofer
We present options for visualizing contrast maps in 3D ion transmission experiments. Simultaneous measurement of angular distributions and flight time of ions transmitted through s…
Assessing electron emission induced by pulsed ion beams: a time-of-flight approach
Svenja Lohmann, Anna Niggas, Vincent Charnay +2
We present a method to measure the kinetic energy of electrons emitted upon ion impact via their time-of-flight. Pulsed beams of H, D, He and Ne ions with…
Accurate high-resolution depth profiling of magnetron sputtered transition metal alloy films containing light species: A multi-method approach
M. V. Moro, R. Holeňák, L. Zendejas Medina +2
We present an assessment of a multi-method approach based on ion beam analysis to obtain high-resolution depth profiles of the total chemical composition of complex alloy systems.…