One-photon pair annihilation in pulsed plane-wave backgrounds

  title={One-photon pair annihilation in pulsed plane-wave backgrounds},
  author={S. Tang and Anton Ilderton and B. King},
  journal={Physical Review A},
We study the $2\ensuremath{\rightarrow}1$ process of electron-positron pair annihilation to a single photon in a plane-wave background. The probability of the process in a pulsed plane wave is presented, and a locally constant field approximation is derived and benchmarked against exact results. The stricter kinematics of annihilation (compared to the $1\ensuremath{\rightarrow}2$ processes usually studied) leads to a stronger dependence on the incoming particle states. We demonstrate this by… 

Electron-positron annihilation into two photons in an intense plane-wave field

The process of electron-positron annihilation into two photons in the presence of an intense classical plane wave of an arbitrary shape is investigated analytically by employing light-cone

Nonlinear photon trident versus double Compton scattering and resummation of one-step terms

We study the photon trident process, where an initial photon turns into an electron-positron pair and a final photon under a nonlinear interaction with a strong plane-wave background field. We show

Uniform locally constant field approximation for photon-seeded pair production

  • B. King
  • Physics
    Physical Review A
  • 2020
A challenge to upcoming experiments that plan to collide a particle beam with laser pulses of moderate intensity is how to correctly incorporate quantum effects into simulation frameworks. Using a

Self-absorption of synchrotron radiation in a laser-irradiated plasma

Electrons at the surface of a plasma that is irradiated by a laser with intensity in excess of $10^{23}~\mathrm{W}\mathrm{cm}^{-2}$ are accelerated so strongly that they emit bursts of synchrotron

Locally monochromatic approximation to QED in intense laser fields

We derive an approximation to QED effects in strong background fields which can be employed to improve numerical simulations of laser-particle collisions. Treating the laser as a plane wave of



Pair production in a plane wave by thermal background photons

Ever since Schwinger published his influential paper [J. Schwinger, Phys. Rev. \textbf{82}, 664 (1951)], it has been unanimously accepted that the vacuum is stable in the presence of an

One-photon annihilation of an electron-positron pair in the field of pulsed circularly polarized light wave

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An electromagnetic pair-creation cascade seeded by an electron or a photon in an intense plane wave interacts in a complicated way with the external field. Many simulations neglect the vector nature

QED cascades induced by circularly polarized laser fields

The results of Monte-Carlo simulations of electron-positron-photon cascades initiated by slow electrons in circularly polarized fields of ultra-high strength are presented and discussed. Our results

Laser-driven plasma pinching in e^{-}e^{+} cascade.

It is shown that, if the laser facility provides a total power above 20 PW, it is possible to trigger not only a QED cascade but also pinching in the produced electron-positron plasma, which can provide extreme conditions for probing and exploring fundamental physics of the matter and vacuum.

Pair annihilation in laser pulses: Optical versus x-ray free-electron laser regimes

We discuss the theory and phenomenology of pair annihilation, within an ultrashort laser pulse, to a single photon. The signature of this process is the unidirectional emission of single photons with

Classical and quantum particle dynamics in univariate background fields

We investigate deviations from the plane wave model in the interaction of charged particles with strong electromagnetic fields. A general result is that integrability of the dynamics is lost when

Electromagnetic cascade in high-energy electron, positron, and photon interactions with intense laser pulses

Author(s): Bulanov, SS; Schroeder, CB; Esarey, E; Leemans, WP | Abstract: The interaction of high-energy electrons, positrons, and photons with intense laser pulses is studied in head-on collision

Implementing nonlinear Compton scattering beyond the local-constant-field approximation

In the calculation of probabilities of physical processes occurring in a background classical field, the local-constant-field approximation (LCFA) relies on the possibility of neglecting the