Nonresonant quantum electrodynamics processes in a pulsed laser field

Roshchupkin, S. P.; Lebed, A. A.; Padusenko, E. A.

doi:10.1134/s1054660x12100209

Cited by 60 publications

(98 citation statements)

References 44 publications

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“…Here in relations (50) and (53 ) solid angles of positron and electron are denoted by dΩ ± . In expressions (49) and (52) parameters γ p+q− and γ p−q+ are determined by relations (18), (19), where it is necessary to replace: p 1 → p + , p 2 → q − for γ p+q− and p 1 → q + , p 2 → p − for γ p−q+ . Relativistic-invariant parameters u (a) and u (b) equals to:…”

Section: The Resonant Differential Cross Sectionmentioning

confidence: 99%

Resonant photoproduction of high-energy electron-positron pairs in the field of a nucleus and a weak electromagnetic wave

2019

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The resonant photoproduction of ultrarelativistic electron-positron pairs (PPP) in a nuclear field and a weak laser field is theoretically studied. Under resonance conditions, the intermediate virtual electron (positron) in the laser field becomes a real particle. As a result, the initial process of the second order in the fine structure constant in the laser field effectively reduces into two successive processes of the first order: single-photon production of electron-positron pair in a laser field (laserstimulated Breit-Wheeler process) and laser-assisted process of electron (positron) scattering on a nucleus. Resonant kinematics of PPP is studied in details. It is shown that for the considered laser intensities resonance is possible only for the initial photon energies greater than the characteristic threshold energy. At the same time, the ultrarelativistic electron and positron propagate in a narrow cone along the direction of the initial photon momentum. The resonant energy of the positron (electron) can has two values for each radiation angle which varies from zero to some maximum value determined by the energy of the initial photon and the threshold energy. Resonant differential cross section of the studied process was obtained. It is shown that the resonant differential cross section of the PPP can significantly exceed the corresponding cross section of the PPP without an external field. The project calculations may be experimentally verified by the scientific facilities of pulsed laser radiation (SLAC, FAIR, XFEL, ELI, XCELS).

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Section: The Resonant Differential Cross Sectionmentioning

confidence: 99%

Resonant photoproduction of high-energy electron-positron pairs in the field of a nucleus and a weak electromagnetic wave

2019

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“…Another possible scenario of producing electron-positron pairs is the nonlinear BreitWheeler process, which is the main topic of this paper. For recent reviews concerning electron-positron pair creation, we refer the reader to [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Coherent combs of antimatter from nonlinear electron-positron-pair creation

Krajewska

Kamiński²

2014

Phys. Rev. A

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Electron-positron pair creation in collisions of a modulated laser pulse with a high-energy photon (nonlinear Breit-Wheeler process) is studied by means of strong-field quantum electrodynamics. It is shown that the driving pulse modulations lead to appearance of comb structures in the energy spectra of produced positrons (electrons). It is demonstrated that these combs result from a coherent enhancement of probability amplitudes of pair creation from different modulations of the laser pulse. Thus, resembling the Young-double slit experiment for anti-matter (matter) waves.

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“…The resonant behavior of the processes of the second order in the fine-structure constant is one of the fundamental problems of quantum electrodynamics in the presence of an external field, whose analysis was started in the mid-1960s (see, for example, reviews [1][2][3][4][5], monographs [6][7][8], and [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]). …”

Section: Introductionmentioning

confidence: 99%

Resonance of the exchange amplitude of a photon by an electron scattering in a pulsed laser field

2015

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Resonant scattering of a photon by an electron in the presence of the field of the low intensity circularly polarized pulsed laser wave is studied theoretically. The approximation used the case in which a laser-pulse duration is significantly greater than the characteristic oscillation time. The resonance conditions of the exchange diagrams by electron and positron intermediate states were determined. The probability of such a process is calculated. It is demonstrated that the resonant probability may be six to ten orders of magnitude higher than the probability of the Compton effect in the absence of the external field. Obtained results can be verified experimentally in the framework of modern research projects (SLAC, FAIR, XFEL, and ELI).

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Nonresonant quantum electrodynamics processes in a pulsed laser field

Cited by 60 publications

References 44 publications

Resonant photoproduction of high-energy electron-positron pairs in the field of a nucleus and a weak electromagnetic wave

Resonant photoproduction of high-energy electron-positron pairs in the field of a nucleus and a weak electromagnetic wave

Coherent combs of antimatter from nonlinear electron-positron-pair creation

Resonance of the exchange amplitude of a photon by an electron scattering in a pulsed laser field

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