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113 papers
Time delay in nonadiabatic tunneling ionization
Michael Klaiber, Karen Z. Hatsagortsyan, Christoph H. Keitel
The under-the-barrier recollision pathway during the tunneling ionization of an atom, despite its minuscule amplitude, leaves its signature on the observable photoelectron momentum…
Qprop-ND: A Nondipole Extension of the Qprop Package for Strong-Field Laser Physics
Haoyuan He, Zhao-Han Zhang, Karen Z. Hatsagortsyan +1
The Qprop 3.0 package for the solution of the time-dependent Schrödinger equation for an electron in a laser field and atomic potential is extended to incorporate nondipole effects…
Nondipole Coulomb effects in strong x-ray field ionization
Haoyuan He, Karen Z. Hatsagortsyan, Christoph H. Keitel
Atomic ionization in superintense x-ray fields is studied through numerical solutions of the time-dependent Schrödinger equation including nondipole corrections. The role of the Co…
Radiation-induced electron spin polarization in ultrarelativistic kinetic turbulence
Peng Liu, Karen Z. Hatsagortsyan, Christoph H. Keitel +1
Electron spin polarization in radiative plasmas with ultrarelativistic kinetic turbulence under highly magnetized conditions is investigated using particle-in-cell simulations. We…
Quasiperiodic nondipole ionization dynamics in the x-ray stabilization regime
Aleksandr V. Boitsov, Karen Z. Hatsagortsyan, Christoph H. Keitel
Recent advances in strong x-ray laser techniques enable the study of nonlinear multiphoton ionization in extreme high-frequency fields. Although the stabilization regime in such fi…
Relativistic Lindblad description of the electron's radiative dynamics
Andre G. Campos, Karen Z. Hatsagortsyan, Christoph H. Keitel
An effective model for describing the relativistic quantum dynamics of a radiating electron is developed via a relativistic generalization of the Lindblad master equation. By incor…