Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Hatsagortsyan, Karen Z."'
A method for the generation of ultrarelativistic electron beams with high spin polarization is put forward, where a tightly-focused linearly-polarized ultraintense laser pulse interacts with a nonprepolarized transverse-size-tailored solid target. Th
Externí odkaz:
http://arxiv.org/abs/2406.05493
A relativistic analytical theory of strong field ionization applicable across the regimes of the deep-tunneling up to the over-barrier ionization (OTBI) is developed, incorporating the effects of the polarization of the atomic bound state and the Sta
Externí odkaz:
http://arxiv.org/abs/2403.11285
The spin polarization of photoelectrons induced by an intense linearly polarized laser field is investigated using numerical solutions of the time-dependent Schr\"odinger equation in companion with our analytic treatment via the spin-resolved strong-
Externí odkaz:
http://arxiv.org/abs/2402.11825
Vacuum polarization (VP) is investigated for the interaction of a polarized $\gamma$-ray beam of GeV photons with a counterpropagating ultraintense laser pulse. In a conventional setup of a vacuum birefringence measurement, a VP signal is the emergin
Externí odkaz:
http://arxiv.org/abs/2401.11168
A solution of the Dirac equation in a strong laser field presenting a nonspreading wave packet in the rest frame of the electron is derived. It consists of a generalization of the self-accelerating free electron wave packet [Kaminer et al. Nature Phy
Externí odkaz:
http://arxiv.org/abs/2310.09019
Generation of ultrarelativistic polarized leptons during interaction of an ultrarelativistic electron beam with a counterpropagating ultraintense laser pulse is investigated in the quantum radiation-dominated domain. While the symmetry of the laser f
Externí odkaz:
http://arxiv.org/abs/2307.08595
Electron acceleration mechanisms near the counterstreaming interface of a relativistic collisionless shock (RCS) are investigated using particle-in-cell (PIC) simulations. We identify a slingshot-like injection process induced by the drifting electri
Externí odkaz:
http://arxiv.org/abs/2307.00876
The analytical R-matrix (ARM) theory has been known for an efficient description of the Coulomb effects of the atomic core in strong-field ionization in the nonrelativistic regime. We generalize the ARM theory into the relativistic domain aiming at t
Externí odkaz:
http://arxiv.org/abs/2302.01779
Plasma current filamentation of an ultrarelativistic electron beam impinging on an overdense plasma is investigated, with emphasis on radiation-induced electron polarization. Particle-in-cell simulations provide the classification and in-depth analys
Externí odkaz:
http://arxiv.org/abs/2212.03303
Tunneling ionization is characterized by a negative time delay, observed asymptotically as a specific shift of the photoelectron momentum distribution, which is caused by the interference of the sub-barrier recolliding and direct ionization paths. In
Externí odkaz:
http://arxiv.org/abs/2208.10946