63 citations · 222 across the 12 of their papers we have counts for
12 papers
Commissioning of a fast fine-step electron-energy-scan system for electron-ion crossed-beams experiments
B. Michel Döhring, Alexander Borovik, Kurt Huber +2
We report on the commissioning of a fast electron-energy scan system for measurements of electron-impact ionization cross sections. The Giessen crossed-beams experiment employs a h…
Double to tenfold M-shell photoionization of singly charged lanthanum ions
M. Looshorn, B. M. Döhring, P. -M. Hillenbrand +9
Using the photon-ion merged-beams technique at the PETRA\,III synchrotron light source, we have measured cross sections for double and up to tenfold photoionization of La ion…
Experimental and theoretical total cross sections for single and double ionization of the open--shell ions Xe, Xe, and Xe by electron impact
Fengtao Jin, Alexander Borovik, B. Michel Döhring +3
We present new experimental and theoretical cross sections for electron-impact single ionization of Xe and Xe ions, and double ionization of Xe, Xe…
Vibrationally Resolved Inner-Shell Photoexcitation of the Molecular Anion C
S. Schippers, P. -M. Hillenbrand, A. Perry-Sassmannshausen +6
Carbon core-hole excitation of the molecular anion C has been experimentally studied at high resolution by employing the photon-ion merged-beams technique at a synchrotr…
Multiple Photodetachment of Oxygen Anions via K-Shell Excitation and Ionization: Direct Double-Detachment Processes and Subsequent Deexcitation Cascades
S. Schippers, A. Hamann, A. Perry-Sassmannshausen +6
Experimental cross sections for m-fold photodetachment (m=2-5) of oxygen anions via K-shell excitation and ionization were measured in the photon-energy range of 525-1500 eV using…
Multiple photodetachment of silicon anions via K-shell excitation and ionization
A. Perry-Sassmannshausen, T. Buhr, M. Martins +5
Experimental cross sections for -fold photodetachment () of silicon anions via -shell excitation and ionization were measured in the photon-energy range of 1830-1900 e…
The SPHERE infrared survey for exoplanets (SHINE)- I Sample definition and target characterization
S. Desidera, G. Chauvin, M. Bonavita +105
Large surveys with new-generation high-contrast imaging instruments are needed to derive the frequency and properties of exoplanet populations with separations from 5 to 300…
Photoionization of astrophysically relevant atomic ions at PIPE
Stefan Schippers, Alfred Müller
We review recent work on the photoionization of atomic ions of astrophysical interest that has been carried out at the photon-ion merged-beams setup PIPE, a permanently installed e…
The photon-ion merged-beams experiment PIPE at PETRAIII - The first five years
S. Schippers, T. Buhr, A. Borovik +13
The Photon-Ion Spectrometer at PETRA III - in short, PIPE - is a permanently installed user facility at the "Variable Polarization XUV Beamline" P04 of the synchrotron light source…
Near L-Edge Single and Multiple Photoionization of Singly Charged Iron Ions
Stefan Schippers, Michael Martins, Randolf Beerwerth +7
Absolute cross sections for m-fold photoionization (m=1,...,6) of Fe+ by a single photon were measured employing the photon-ion merged-beams setup PIPE at the PETRA III synchrotron…
Photoionization of tungsten ions: experiment and theory for W and W
B M McLaughlin, C P Ballance, S Schippers +4
Experimental and theoretical results are reported for single-photon single ionization of W and W tungsten ions. Experiments were performed at the photon-ion merged-be…
K-shell photoionization of ground-state Li-like carbon ions [C]: experiment, theory and comparison with time-reversed photorecombination
A Müller, S. Schippers, R. A. Phaneuf +10
Absolute cross sections for the K-shell photoionization of ground-state Li-like carbon [C(1s2s S)] ions were measured by employing the ion-photon merged-beams techni…