49 citations · 213 across the 15 of their papers we have counts for
15 papers
Coherent Compton scattering from hydrogen and helium atoms
Irina A. Gnilozub, Alexander Galstyan, Yuri V. Popov +1
We develop an approach to describing coherent Compton scattering of photons in the keV energy range from hydrogen and helium atoms based on a relativistic version of the AA-approxi…
Static field limit of excitation probabilities in laser-atom interactions
A. Galstyan, V. L. Shablov, Yu. V. Popov +3
We consider the interaction of atomic hydrogen, in its ground state, with an electromagnetic pulse whose duration is fixed in terms of the number of optical cycles. We study the pr…
Fully differential cross sections for singly ionizing 1-Mev p+He collisions at small momentum transfer: Beyond the first Born approximation
O. Chuluunbaatar, S. A. Zaytsev, K. A. Kouzakov +3
We present calculations of the electron angular distributions in the single ionization of helium by 1-MeV proton impact at momentum transfer of 0.75 a.u. and ejected-electron energ…
Ionisation of HO by a strong ultrashort XUV pulse: a model within the single active electron approximation
A. Galstyan, Yu. V. Popov, N. Janssens +5
We present and discuss a new computationally inexpensive method to study, within the single active electron approximation, the interaction of a complex system with an intense ultra…
The strong field approximation within a Faddeev-like formalism for laser-matter interactions
Yu. Popov, A. Galstyan, F. Mota-Furtado +2
We consider the interaction of atomic hydrogen with an intense laser field within the strong-field approximation. By using a Faddeev-like formalism, we introduce a new perturbative…
Modelling laser-atom interactions in the strong field regime
A. Galstyan, Yu. V. Popov, F. Mota-Furtado +5
We consider the ionisation of atomic hydrogen by a strong infrared field. We extend and study in more depth an existing semi-analytical model. Starting from the time-dependent Schr…
Reformulation of the strong field approximation for light-matter interactions
A. Galstyan, O. Chuluunbaatar, A. Hamido +6
We consider the interaction of hydrogen-like atoms with a strong laser field and show that the strong field approximation and all its variants may be grouped into a set of families…
Transfer excitation reactions in fast proton-helium collisions
M. S. Schöffler, H. -K. Kim, O. Chuluunbaatar +9
Continuing previous work, we have measured the projectile scattering-angle dependency for transfer excitation of fast protons (300-1200 keV/u) colliding with helium (p+He $\rightar…
2D electron momentum distributions for transfer ionization in fast proton Helium collisions
M. S. Schoeffler, O. Chuluunbaatar, S. Houamer +9
The momentum distribution of the electron in the reaction p+He H + He + is measured for projectile energies =300 and 630 keV/u at very small scatterin…
Comment on "Dynamics of transfer ionization in fast ion-atom collisions"
Yu. V. Popov, V. L. Shablov, K. A. Kouzakov +1
We inspect the first-order electron-electron capture scenario for transfer ionization that has been recently formulated by Voitkiv et al. (Phys. Rev. A 86, 012709 (2012) and refere…
Transfer ionization and its sensitivity to the ground-state wave function
M. S. Schöffler, O. Chuluunbaatar, Yu. V. Popov +7
We present kinematically complete theoretical calculations and experiments for transfer ionization in HHe collisions at 630 keV/u. Experiment and theory are compared on the mo…
Effects of nonzero photon momentum in (γ,2e) processes
Alexander G. Galstyan, Ochbadrakh Chuluunbaatar, Yuri V. Popov +1
We study the effects of nonzero photon momentum on the triply-differential cross section for (γ,2e) processes. Due to the low value of the photon momentum, these effects are weak a…
Emission Spectrum of a Dipole in a Semi-infinite Periodic Dielectric Structure: Effect of the Boundary
A. G. Galstyan, M. E. Raikh, Z. V. Vardeny
The emission spectrum of a dipole embedded in a semi-infinite photonic crystal is calculated. For simplicity we study the case in which the dielectric function is sinusoidally modu…
Disorder-Induced Broadening of the Density of States for 2D Electrons with Strong Spin-Orbit Coupling
A. G. Galstyan, M. E. Raikh
We study theoretically the disorder-induced smearing of the density of states in a two-dimensional electron system taking into account a spin-orbit term in the Hamiltonian of a fre…
Localization and conductance fluctuations in the integer quantum Hall effect: Real--space renormalization group approach
A. G. Galstyan, M. E. Raikh
We consider the network model of the integer quantum Hall effect transition. By generalizing the real--space renormalization group procedure for the classical percolation to the ca…