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A closer insight into classical models for the He atom with two-active electrons
(Springer, 2018-07-05)
In this work, two classical models which have been proposed to describe He atoms in collision processes by charged particle impact are revisited and analyzed. These are the Heisenberg-core and the energy-bounded classical ...
Coherence-length effects in fast atom diffraction at grazing incidence
(MDPI Multidisciplinary Digital Publishing Institute, 2018-11)
Coherence properties of projectiles, found relevant in ion-atom collisions, are investigated by analyzing the influence of the degree of coherence of the atomic beam on interference patterns produced by grazing-incidence ...
Generation of nonground-state Bose-Einstein condensates by modulating atomic interactions
(AMER PHYSICAL SOC, 2008)
A technique is proposed for creating nonground-state Bose-Einstein condensates in a trapping potential by means of the temporal modulation of atomic interactions. Applying a time-dependent spatially homogeneous magnetic ...
Loss of wave-packet coherence in ion-atom collisions
(American Physical Society, 2016-03)
The projectile beam coherence effects occurring in ion-atom collisions are analyzed on the basis of the recent theory of Karlovets et al. [Phys. Rev. A 92, 052703 (2015)PLRAAN1050-294710.1103/PhysRevA.92.052703] developed ...
Oscillatory Patterns In Angular Differential Ion-Atom Charge Exchange Cross Sections: The Role Of Electron Saddle Swaps
(American Institute of Physics, 2013-04-19)
In this work, we have performed an experimental/theoretical study of state selective charge exchange cross sections in 1-10 keV/amu Ne8+ +Na(3s) collisions. Theoretical calculations provided by the classical trajectory ...
Atomic concealment due to loss of coherence of the incident beam of projectiles in collision processes
(MDPI AG, 2021-03)
In the study of collision processes, a series of conditions is usually assumed. One of them is that the beam of projectiles is coherent in lengths greater than those of the targets against which it strikes. However, recent ...
Differential electron emission in the ionization of Ne and Xe atoms under fast bare carbon ion impact
(IOP Publishing, 2015-06)
Measurement of the energy and angular distributions of the double differential cross section (DDCS) of electron emission from Ne and Xe atoms in collision with 5 MeV u-1 bare carbon ions is reported. This study aimed to ...
Collision of protons with carbon atoms of a graphene surface in the presence of adsorbed potassium
(American Physical Society, 2020-09)
In this work we study the frontal collision of protons with the carbon atoms of a graphene surface with a low coverage of adsorbed potassium. It is aimed at the analysis of the effect of the adsorbates in both charge ...
Role of the recoil ion in single-electron capture and single-ionization processes for collisions of protons with He and Ar atoms
(American Physical Society, 2017-05-23)
In this work the single-electron capture and single-ionization processes are studied for proton collisions with He and Ar atoms at impact energies in the range 25-100 keV. Classical trajectory Monte Carlo simulations are ...
Theory of ionization processes in positron-atom collisions
(Elsevier Science, 2006-12)
We review past and present theoretical developments in the description of ionization processes in positron-atom collisions. Starting from an analysis that incorporates all the interactions in the final state on an equal ...