Cooling of relativistic electron beams in intense laser pulses: Chirps and radiation

Yoffe, Samuel R.; Noble, Adam; MacLeod, Alexander J.; Jaroszynski, D. A.

doi:10.1016/j.nima.2016.02.002

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…This idea was employed, for example, in a recent proposal [16]. Notice that the numerical simulations of electron's dynamics and its radiation in a strong laser wave and in crystals with radiation reaction taken into account already present in the literature (see, e.g., [13][14][15][17][18][19][20][21][22][23]). However, the problem of radiation of electrons in a crossed field has somehow escaped the scope of these papers.…”

Section: Introductionmentioning

confidence: 99%

Properties of an ultrarelativistic charged particle radiation in a constant homogeneous crossed electromagnetic field

2017

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The properties of radiation created by a classical ultrarelativistic scalar charged particle in a constant homogeneous crossed electromagnetic field are described both analytically and numerically with radiation reaction taken into account in the form of the Landau-Lifshitz equation. The total radiation naturally falls into two parts: the radiation formed at the entrance point of a particle into the crossed field (the synchrotron entrance radiation), and the radiation coming from the late-time asymptotics of a particle motion (the de-excited radiation). The synchrotron entrance radiation resembles, although does not coincide with, the ultrarelativistic limit of the synchrotron radiation: its distribution over energies and angles possesses almost the same properties. The de-excited radiation is soft, not concentrated in the plane of motion of a charged particle, and almost completely circularly polarized. The photon energy delivering the maximum to its spectral angular distribution decreases with increasing the initial energy of a charged particle, while the maximum value of this distribution remains the same at the fixed observation angle. The ultraviolet and infrared asymptotics of the total radiation are also described.

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Section: Introductionmentioning

confidence: 99%

Properties of an ultrarelativistic charged particle radiation in a constant homogeneous crossed electromagnetic field

2017

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“…[25] qualitatively differ from the integrated spectra in Ref. [53].) We can see that in all three cases the spectra die off at the same frequency and, apart from a modest change in amplitude, there is little dependence on the laser focussing.…”

Section: E Effects At High Intensitiesmentioning

confidence: 51%

Focusing effects in laser-electron Thomson scattering

Harvey

Marklund

Holkundkar

2016

Phys. Rev. Accel. Beams

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We study the effects of laser pulse focussing on the spectral properties of Thomson scattered radiation. Modelling the laser as a paraxial beam we find that, in all but the most extreme cases of focussing, the temporal envelope has a much bigger effect on the spectrum than the focussing itself. For the case of ultra-short pulses, where the paraxial model is no longer valid, we adopt a sub-cycle vector beam description of the field. It is found that the emission harmonics are blue shifted and broaden out in frequency space as the pulse becomes shorter. Additionally the carrier envelope phase becomes important, resulting in an angular asymmetry in the spectrum. We then use the same model to study the effects of focussing beyond the limit where the paraxial expansion is valid. It is found that fields focussed to sub-wavelength spot sizes produce spectra that are qualitatively similar to those from sub-cycle pulses due to the shortening of the pulse with focussing. Finally, we study high-intensity fields and find that, in general, the focussing makes negligible difference to the spectra in the regime of radiation reaction. * cnharvey@physics.org † mattias.marklund@chalmers.se ‡ amol.holkundkar@pilani.bits-pilani.ac.in

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“…The energy loss rate increases with the energy of particles and therefore -on average -the most energetic particles lose energy more quickly than others. This causes contraction of the particle phase space (Tamburini et al, 2011;Yoffe et al, 2015Yoffe et al, , 2016 and in particular, to the shrinking of energy distribution when an electron beam passes through an intense laser pulse. However, the diffusion term, which governs stochastic broadening, can dominate for sufficiently high values of 𝜒.…”

Section: Stochasticity Straggling and Quenchingmentioning

confidence: 99%

Charged particle motion and radiation in strong electromagnetic fields

Gonoskov

Blackburn²,

Marklund³

et al. 2022

Rev. Mod. Phys.

157

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The dynamics of charged particles in electromagnetic fields is an essential component of understanding the most extreme environments in our Universe. In electromagnetic fields of sufficient magnitude, radiation emission dominates the particle motion and effects of quantum electrodynamics (QED) in strong fields are crucial, which triggers electron-positron pair cascades and counterintuitive particletrapping phenomena. As a result of recent progress in laser technology, high-power lasers provide a platform to create and probe such fields in the laboratory. With new large-scale laser facilities on the horizon and the prospect of investigating these hitherto unexplored regimes, we review the basic physical processes of radiation reaction and QED in strong fields, how they are treated theoretically and in simulation, the new collective dynamics they unlock, recent experimental progress and plans, as well as possible applications for high-flux particle and radiation sources.

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Cooling of relativistic electron beams in intense laser pulses: Chirps and radiation

Cited by 4 publications

References 24 publications

Properties of an ultrarelativistic charged particle radiation in a constant homogeneous crossed electromagnetic field

Properties of an ultrarelativistic charged particle radiation in a constant homogeneous crossed electromagnetic field

Focusing effects in laser-electron Thomson scattering

Charged particle motion and radiation in strong electromagnetic fields

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