93 citations · 231 across the 38 of their papers we have counts for
38 papers
Probing atoms by periodically modulated electron bunches
A. B. Voitkiv, E. Schneidmiller, T. Pfeifer
When passing through an undulator in a Free Electron Laser, dense bunches of relativistic electrons split into micro-bunches, attaining a periodic space-time structure. We show tha…
Positronium breakup versus hydrogen ionization in collisions with fast charged projectiles: a comparative study
B. Najjari, S. F. Zhang, X. Ma +1
We perform a comparative study of the breakup of positronium and ionization of atomic hydrogen by projectile-nuclei in the weak perturbation collision regime, $Z_p e_0^2/\hbar \ll…
Ionization of atoms by dense and compact beams of extreme relativistic electrons
S. Kim, C. Müller, A. B. Voitkiv
Ionization is one of the basic physical processes, occurring when charged particles penetrate atomic matter. When atoms are bombarded by very dense and compact beams of extreme rel…
Phenomenological rate formulas for over-barrier ionization of hydrogen and helium atoms in strong constant electric fields
S. Remme, A. B. Voitkiv, G. Pretzler +1
Nonrelativistic over-barrier ionization (OBI) of atoms in strong electric fields is studied, focussing on hydrogen and helium as concrete examples. Our goal is, on the one hand, to…
Double interatomic Coulombic electron capture induced by a single incident electron in two- and three-center atomic systems
L. M. Ellerbrock, A. B. Voitkiv, C. Müller
In the process of interatomic Coulombic electron capture, an incident free electron is captured at an atomic center and the transition energy is transferred radiationlessly ove…
Impact of laser focussing and radiation reaction on particle spectra from nonlinear Breit-Wheeler pair production in the nonperturbative regime
A. Eckey, A. Golub, F. C. Salgado +4
Near-future experiments intend to detect strong-field Breit-Wheeler pair creation from the collision between bremsstrahlung bursts containing GeV- quanta and high-intensity lase…