6 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…
Muon pair production in electron-positron collisions close to threshold in the presence of a strong laser field
N. Mahlin, S. Villalba-Chávez, C. Müller
Within the framework of strong-field quantum electrodynamics, we study the creation of muon-antimuon pairs in laser-assisted collisions of electrons with positrons, whose center-of…
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…
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…
Entering the overcritical regime of nonlinear Breit-Wheeler pair production in collisions of bremsstrahlung -rays and superintense, tightly focused laser pulses
I. Elsner, A. Golub, S. Villalba-Chávez +1
Near-future high-intensity lasers offer prospects for the observation of nonlinear Breit-Wheeler pair production in an overcritical field regime, where the quantum nonlinearity par…