60 citations · 148 across the 18 of their papers we have counts for
18 papers
Coherently Enhanced Cherenkov Radiation by Highly Relativistic and Ultra-Compact Electron Beams
S. Kim, C. Müller, A. B. Voitkiv
Cherenkov radiation is emitted when charged particles penetrate dielectric media with velocity higher than the speed of light in the medium. Recent developments in plasma-based acc…
Comparative study of nonperturbative electron-positron pair production by intense laser fields colliding with either bremsstrahlung -rays or relativistic ions
S. Remme, A. B. Voitkiv, S. Villalba-Chávez +1
It is well known that electron-positron pairs can be created in the strong-field environments formed by (i) a high-intensity laser field and a high-energy -photon (nonlinear Bre…
Bound-free electron-positron pair production in combined Coulomb and constant crossed electromagnetic fields: a Schwinger-like process with intrinsic assistance
S. Remme, A. Eckey, S. Villalba-Chávez +2
The bound-free channel of electron-positron pair production by a highly charged bare ion in the presence of a strong constant crossed electromagnetic field is studied. To calculate…
Resonant elastic scattering of polarized electrons on H-like ions
D. M. Vasileva, K. N. Lyashchenko, A. B. Voitkiv +2
The polarization properties of the elastic electron scattering on H-like ions are investigated within the framework of the relativistic QED theory. The polarization properties are…
Resonant single-photon double ionization driven by combined intra- and interatomic electron correlations
A. Eckey, A. B. Voitkiv, C. Müller
Double ionization of an atom by single-photon absorption in the presence of a neighbouring atom is studied. The latter is, first, resonantly photoexcited and, afterwards, transfers…
Resonant electron scattering and dielectronic recombination in two-center atomic systems
A. Eckey, A. Jacob, A. B. Voitkiv +1
Electron scattering and dielectronic recombination with an ion in the presence of a neighboring atom is studied. The incident electron is assumed to be captured by the ion, leading…
Effects of autoionization in electron loss from helium-like highly charged ions in collisions with photons and fast atomic particles
K. N. Lyashchenko, O. Yu. Andreev, A. B. Voitkiv
We study theoretically single electron loss from helium-like highly charged ions involving excitation and decay of autoionizing states of the ion. Electron loss is caused by either…
Mutual ionization in atomic collisions near the electronic threshold
S. F. Zhang, X. L. Zhu, A. B. Voitkiv +6
We study mutual ionization in collisions between atomic hydrogen and helium at impact velocities near the electronic threshold for this process (determined by the condition that ki…
Dynamics of correlated transfer-ionization in collisions with a fast highly charged ion
A. B. Voitkiv
Transfer-ionization in fast collisions between a bare ion and an atom, in which one of the atomic electrons is captured by the ion whereas another one is emitted, crucially depends…
On the dynamics of transfer-ionization in fast ion-atomic collisions
A. B. Voitkiv, X. Ma
We consider trasfer-ionization in collisions of fast (3.6 -- 11 MeV/u) protons, alpha-particles and lithium nuclei with helium atoms. There are just a few basic mechanisms contribu…
Excitation of heavy hydrogen-like ions by light atoms in relativistic collisions with large momentum transfers
B. Najjari, A. B. Voitkiv
We present a theory for excitation of heavy hydrogen-like projectile-ions by light target-atoms in collisions where the momentum transfers to the atom are very large on the atomic…
Resonantly enhanced photoionization in correlated three-atomic systems
B. Najjari, C. Müller, A. B. Voitkiv
Modifications of photoionization arising from resonant electron-electron correlations between neighbouring atoms in an atomic sample are studied. The sample contains atomic species…
Resonant two-photon single ionization of two atoms
C. Müller, A. B. Voitkiv
Resonant two-photon ionization in a system consisting of two spatially well-separated atoms is studied. Due to two-center electron-electron correlations, the ionization may also pr…
Two-center resonant photo ionization
B. Najjari, A. B. Voitkiv, C. Müller
Photoionization of an atom , in the presence of a neighboring atom , can proceed via resonant excitation of with subsequent energy transfer to through two-center elec…
Inelastic collisions of relativistic electrons with atomic targets assisted by a laser field
A. B. Voitkiv, B. Najjari, J. Ullrich
We consider inelastic collisions between relativistic electrons and atomic targets assisted by a low-frequency laser field in the case when this field is still much weaker than the…
Relativistic electron-ion recombination in the presence of an intense laser field
C. Müller, A. B. Voitkiv, B. Najjari
Radiative recombination of a relativistic electron with a highly charged ion in the presence of an intense laser field is considered. Various relativistic effects, caused by the hi…
Bound-bound pair production in relativistic collisions
A. B. Voitkiv, B. Najjari, A. Di Piazza
Electron-positron pair production is considered in the relativistic collision of a nucleus and an anti-nucleus, in which both leptons are created in bound states of the correspondi…
Simultaneous loss and excitation of projectile electrons in relativistic collisions of U(1s) ions with atoms
B. Najjari, A. B. Voitkiv
We study relativistic collisions between helium-like uranium ions initially in the ground state and atoms in which, in a single collision event, one of the electrons of the ion is…