Relativistic elastic scattering of hydrogen atom by positron impact in a circularly polarized laser field

Manaut, B.; Taj, S.; Idrissi, M. El

doi:10.1139/cjp-2013-0143

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…The theoretical work of [7] inspired Szymanowski et al [2] to investigate the spin effects in a laser-assisted Mott scattering process in great detail using the Dirac-Volkov formalism in the first Born approximation. There are many other papers in which the Dirac-Volkov formalism is fully used (see [8][9][10][11][12][13][14]). Roshchupkin [15] extended the same process to the second Born approximation.…”

Section: Introductionmentioning

confidence: 99%

On the Coulomb effect in laser-assisted proton scattering by a stationary atomic nucleus

et al. 2017

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In the framework of the first Born approximation, we investigate the scenario where in addition to a laser field, a nuclear Coulomb field is also present to affect a proton. We work in the approximation in which the proton is considered to be a structureless spin 1/2 Dirac particle with a mass m p . Furthermore, in the laboratory system, the fixed nucleus is treated as a point-like Coulomb potential. In the presence of a laser field, and taking into account the Coulomb effect, the proton will be described by distorted Dirac-Volkov wave functions. The introduction of the Coulomb effect to both the incident and scattered proton will enhance the relativistic differential cross sections (RDCSs). Regarding the physical picture, it is found that for the various kinetic energies of the incident proton, the Coulomb effect can be neglected at high kinetic energies in this particular geometry. Therefore, Dirac-Volkov states are largely sufficient to describe the laser-dressed protons. The behavior of the various RDCSs versus the atomic number Z is also presented.

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Section: Introductionmentioning

confidence: 99%

On the Coulomb effect in laser-assisted proton scattering by a stationary atomic nucleus

et al. 2017

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“…, which represents the positron spinorial contribution, has already been evaluated in a previous work [6]. The quantity…”

Section: Dvpwsgmentioning

confidence: 99%

“…Positron-atom collisions in the presence of a laser field have recently become of central importance in practical applications [1][2][3] and fundamental studies [4][5][6]. In particular, the ionization processes have been widely investigated in the literature by several authors [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Laser-Assisted Positron-Impact Ionization of Hydrogen Atoms

et al. 2019

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The theory of triple differential cross-sections, developed previously within the framework of nonrelativistic Schrödinger formalism, is extended to the relativistic treatment by using the Dirac-Volkov formalism. At high energies, the colliding particles lose their Coulomb character and the channel of the symmetric coplanar geometry is opened. In the first Born approximation, we have studied theoretically the laser-assisted relativistic ionization of hydrogen atoms by positron impact in this geometry. Triple differential cross-sections are calculated by using two approaches: (i) RPWSG to describe relativistic plane wave in the symmetric geometry, (ii) DVPWSG (Dirac-Volkov plane wave in the symmetric geometry) in which we take full account of the relativistic dressing effects, has been proposed to study the influence of laser field on the colliding particles. To check the consistency of our model, we have used, for comparison, the nonrelativistic approach: nonrelativistic plane wave in the symmetric geometry. Numerical results for the variation of relativistic triple differential cross-sections and their dependences on laser field parameters (intensity, frequency) and incident positron energy are also presented. As for the laser modifications, by summing over a very large number of exchanged photons, the laser-assisted triple differential cross-sections usually tends to approach the laser-free triple differential cross-sections, obeying the famous Kroll-Watson sum rule for positron projectile. In the absence, of any experimental data at high energies for this particular ionization process, we are not in a position to compare the present results with the experimental findings.

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“…G. Mourou and D. Strickland were jointly awarded the 2018 Nobel Prize in Physics for inventing the use of chirped pulse amplification (CPA) as a means to generate high-intensity and ultra-short optical pulses [7,8]. Meanwhile, scientists have been enthusiastic and focused on the study of laser-assisted quantum processes, whether in quantum electrodynamics (QED) [9][10][11][12], electroweak theory [13][14][15][16][17] or atomic physics [18][19][20][21], and generally on the study of the laser-matter interactions [22,23]. In parallel with the production of the high-power femtosecond lasers, experimental testing of these studies became feasible [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Elastic scattering of a muon neutrino by an electron in the presence of a circularly polarized laser field

Asri,

Mouslih,

Jakha

et al. 2021

Preprint

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Relativistic elastic scattering of hydrogen atom by positron impact in a circularly polarized laser field

Cited by 12 publications

References 22 publications

On the Coulomb effect in laser-assisted proton scattering by a stationary atomic nucleus

On the Coulomb effect in laser-assisted proton scattering by a stationary atomic nucleus

Laser-Assisted Positron-Impact Ionization of Hydrogen Atoms

Elastic scattering of a muon neutrino by an electron in the presence of a circularly polarized laser field

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