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Unusually kicked dynamics: Hydrogen atom in a spherical box

100%
Mašović D.
Open Physics
|
2012
|
vol. 10
|
issue 4
768-778
EN
In this paper we have examined the ionization of the ground state hydrogen atom in a spherical box with laser pulses of specific shapes. These shapes are predicted assuming correspondence under some conditions with the alternating kicking field. Unusually kicked dynamics is suggested. It is shown that such kicked dynamics leads to generalized Rabi oscillations with the positive energy states included and participation of the excited states. The correspondence with the real pulse is established emphasizing such unusually kicked dynamics. The approach is verified on the one-dimensional (1D) hydrogen atom and calculation of the known results for ionization probability.
2
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Semiclassical fully differential ionization cross sections of helium with negatively charged fast projectiles

100%
Járai-Szabó F., Nagy L.
Open Physics
|
2011
|
vol. 9
|
issue 4
942-947
EN
Fully differential cross sections are calculated for the ionization of helium by negatively charged fast projectiles using a semiclassical model developed previously for the ionization of atoms by positive projectiles. The method is tested in the case of 1 keV electron and 500 keV antiproton projectiles. The semiclassical results show reasonable agreement with the experiments and other theories. The origin of the obtained structures has been investigated by a partial wave analysis.
3
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The excitation and ionization of the hydrogen atom in strong laser fields

100%
Borbély S., Kiss G., Nagy L.
Open Physics
|
2010
|
vol. 8
|
issue 2
249-257
EN
The probability of excitation and ionization of the hydrogen atom by short strong laser pulses is calculated by solving numerically the time-dependent Schrödinger equation. The probability of excitation to different states is investigated, which helps to identify the important ionization mechanisms. The ionization probability density was also calculated and a good agreement with the other theoretical results was found.
4
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Ionization effects and linear stability in a coaxial plasma device

100%
Kurt E., Kurt H., Bayhan U.
Open Physics
|
2009
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vol. 7
|
issue 1
123-129
EN
A 2-D computer simulation of a coaxial plasma device depending on the conservation equations of electrons, ions and excited atoms together with the Poisson equation for a plasma gun is carried out. Some characteristics of the plasma focus device (PF) such as critical wave numbers a c and voltages U c in the cases of various pressures Pare estimated in order to satisfy the necessary conditions of traveling particle densities (i.e. plasma patterns) via a linear analysis. Oscillatory solutions are characterized by a nonzero imaginary part of the growth rate $$ \Im $$(σ) for all cases. The model also predicts the minimal voltage ranges of the system for certain pressure intervals.
5
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Characterization of the ionization process inside a miniature glow-discharge micropump

88%
Grzebyk T., Górecka-Drzazga A.
|
2018
|
issue 2
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