68 citations · 308 across the 21 of their papers we have counts for
21 papers
Unusual chemical bond and spectrum of beryllium dimer in ground state
A. V. Mitin, A. A. Gusev, O. Chuluunbaatar +3
This review outlines the main results which show the dual nature of the chemical bond in diatomic beryllium molecule in the ground state. It has been shown that the bery…
Ion and Electron Momentum Distributions from Single and Double Ionization of Helium Induced by Compton Scattering
M. Kircher, F. Trinter, S. Grundmann +18
We present the momentum distributions of the nucleus and of the electrons from double ionization of the helium atom by Compton scattering of photons with keV. We find that…
Potential roots of the deep sub-barrier heavy-ion fusion hindrance phenomenon
P. W. Wen, C. J. Lin, R. G. Nazmitdinov +6
We analyse the origin of the unexpected deep sub-barrier heavy-ion fusion hindrance in 64Ni+100Mo and 28Si+64Ni recations. Our analysis is based on the improved coupled-channels ap…
Kinematically complete experimental study of Compton scattering at helium atoms near the ionization threshold
Max Kircher, Florian Trinter, Sven Grundmann +15
Compton scattering is one of the fundamental interaction processes of light with matter. Already upon its discovery [1] it was described as a billiard-type collision of a photon ki…
On rotational-vibrational spectrum of diatomic beryllium molecule
A. A. Gusev, O. Chuluunbaatar, S. I. Vinitsky +7
The eigenvalue problem for second-order ordinary differential equation (SOODE) in a finite interval with the boundary conditions of the first, second and third kind is formulated.…
Finite Element Method for Solving the Collective Nuclear Model with Tetrahedral Symmetry
A. A. Gusev, S. I. Vinitsky, O. Chuluunbaatar +4
We apply a new calculation scheme of a finite element method (FEM) for solving an elliptic boundary-value problem describing a quadrupole vibration collective nuclear model with te…
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…
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…
Agreement at last: an experimental and theoretical study on the single ionization of helium by fast proton impact
H. Gassert, O. Chuluunbaatar, M. Waitz +20
Even though ion/atom-collision is a mature field of atomic physics great discrepancies between experiment and theoretical calculations are still common. Here we present experimenta…
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…
Symbolic-numerical Algorithm for Generating Cluster Eigenfunctions: Tunneling of Clusters Through Repulsive Barriers
Sergue Vinitsky, Alexander Gusev, Ochbadrakh Chuluunbaatar +4
A model for quantum tunnelling of a cluster comprising A identical particles, coupled by oscillator-type potential, through short-range repulsive potential barriers is introduced f…
Symbolic-numerical algorithm for generating cluster eigenfunctions: identical particles with pair oscillator interactions
Alexander Gusev, Sergue Vinitsky, Ochbadrakh Chuluunbaatar +5
The quantum model of a cluster, consisting of A identical particles, coupled by the internal pair interactions and affected by the external field of a target, is considered. A symb…
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…
Analytical and numerical calculations of spectral and optical characteristics of spheroidal quantum dots
A. A. Gusev, L. L. Hai, S. I. Vinitsky +5
In the effective mass approximation for electronic (hole) states of a spheroidal quantum dot with and without external fields the perturbation theory schemes are constructed in the…
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…
Adiabatic description of nonspherical quantum dot models
A. A. Gusev, O. Chuluunbaatar, S. I. Vinitsky +6
Within the effective mass approximation an adiabatic description of spheroidal and dumbbell quantum dot models in the regime of strong dimensional quantization is presented using t…
Algorithm for reduction of boundary-value problems in multistep adiabatic approximation
A. A. Gusev, O. Chuluunbaatar, V. P. Gerdt +3
The adiabatic approximation is well-known method for effective study of few-body systems in molecular, atomic and nuclear physics, using the idea of separation of "fast" and "slow"…
Symbolic-Numeric Algorithms for Computer Analysis of Spheroidal Quantum Dot Models
A. A. Gusev, O. Chuluunbaatar, V. P. Gerdt +4
A computation scheme for solving elliptic boundary value problems with axially symmetric confining potentials using different sets of one-parameter basis functions is presented. Th…