Electron-beam dynamics in a strong laser field including quantum radiation reaction

Neitz, Norman; Piazza, A. Di

doi:10.1103/physreva.90.022102

Cited by 30 publications

(28 citation statements)

References 42 publications

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“…The contraction/expansion of phase space is contained in the function Using equations (27) we can express ϑ ϕ u ( )in equation (26) in terms of the independent variable ϕ u , This latter result is in agreement with observations made by Neitz and Di Piazza [24], and we see that the longitudinal distribution is only sensitive to the properties of the laser pulse through the function  ϕ ( ). After the pulse has passed,  becomes constant and is proportional to the fluence of the pulse.…”

Section: Particle Distribution and Phase Space Contractionsupporting

confidence: 89%

“…Agreement between this analytical solution and numerical results obtained using the approach discussed above is shown below to be excellent. As previously observed, classical beam cooling depends only on the total fluence of the pulse, rather than its duration or peak intensity independently [24,27]. However, for the semi-classical extension, the Vlasov equation is no longer tractable.…”

Section: Interaction Of a Particle Bunch With High-fluence Laser Pulsesmentioning

confidence: 96%

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Longitudinal and transverse cooling of relativistic electron beams in intense laser pulses

et al. 2015

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With the emergence in the next few years of a new breed of high power laser facilities, it is becoming increasingly important to understand how interacting with intense laser pulses affects the bulk properties of a relativistic electron beam. A detailed analysis of the radiative cooling of electrons indicates that, classically, equal contributions to the phase space contraction occur in the transverse and longitudinal directions. In the weakly quantum regime, in addition to an overall reduction in beam cooling, this symmetry is broken, leading to significantly less cooling in the longitudinal than the transverse directions. By introducing an efficient new technique for studying the evolution of a particle distribution, we demonstrate the quantum reduction in beam cooling, and find that it depends on the distribution of energy in the laser pulse, rather than just the total energy as in the classical case.

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Section: Particle Distribution and Phase Space Contractionsupporting

confidence: 89%

Section: Interaction Of a Particle Bunch With High-fluence Laser Pulsesmentioning

confidence: 96%

Longitudinal and transverse cooling of relativistic electron beams in intense laser pulses

et al. 2015

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“…We introduce an analytical model based on a kinetic approach, which confirms the main characteristics of the radiating electron source that are observed in ParticleIn-Cell (PIC) simulations. This builds upon the previous studies of the RR effect on electron beams during the interactions with a laser pulse [17][18][19], by extending to a laser-plasma interaction.…”

Section: Introductionmentioning

confidence: 72%

“…The collective dynamics of a longitudinal electron beam (i.e. where only the longitudinal component of the electron beam momentum is considered) has been investigated in references [17,18], and the RR effect on the longitudinal electron distribution function deduced. RR is found to alter the beam dynamics.…”

Section: Introductionmentioning

confidence: 99%

Radiating electron source generation in ultraintense laser-foil interactions

2016

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A radiating electron source is shown to be created by a laser pulse (with intensity of 10 23 W/cm 2 and duration equal to 30 fs) interacting with a near-critical density plasma. It is shown that the back radiation reaction resulting from high energy synchrotron radiation tends to counteract the action of the ponderomotive force. This enhances the collective dynamics of the radiating electrons in the highest field areas, resulting in the production of a compact radiation source (containing 80% of the synchrotron radiation emission), with an energy on the order of tens of MeV over the laser pulse duration. These phenomena are investigated using a QED-particle-in-cell code, and compared with a kinetic model accounting for the radiation reaction force in the electron distribution function. The results shed new light on electron-photon sources at ultra-high laser intensities and could be tested on future laser facilities.

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“…Figure 1 shows the interaction of the initial Gaussian beam with pulses ranging from N = 5 to 200 cycles. Since the final-state predictions of the classical Landau-Lifshitz theory only depend on the fluence of the pulse [24], E ∝ N a 2 0 , we choose a 0 such that we maintain N a 2 0 = 9248 (corresponding to a peak intensity I = 2 × 10 21 W/cm 2 for λ = 800 nm and T = 27 fs) and the classical final-state properties all agree. This can be seen explicitly in Fig.…”

Section: Linear Polarisationmentioning

confidence: 99%

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

Yoffe

Noble

MacLeod

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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Next-generation high-power laser facilities (such as the Extreme Light Infrastructure) will provide unprecedented field intensities, and will allow us to probe qualitatively new physical regimes for the first time. One of the important fundamental questions which will be addressed is particle dynamics when radiation reaction and quantum effects play a significant role. Classical theories of radiation reaction predict beam cooling in the interaction of a relativistic electron bunch and a high-intensity laser pulse, with final-state properties only dependent on the laser fluence. The observed quantum suppression of this cooling instead exhibits a dependence on the laser intensity directly. This offers the potential for final-state properties to be modified or even controlled by tailoring the intensity profile of the laser pulse. In addition to beam properties, quantum effects will be manifest in the emitted radiation spectra, which could be manipulated for use as radiation sources. We compare predictions made by classical, quasi-classical and stochastic theories of radiation reaction, and investigate the influence of chirped laser pulses on the observed radiation spectra.

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Electron-beam dynamics in a strong laser field including quantum radiation reaction

Cited by 30 publications

References 42 publications

Longitudinal and transverse cooling of relativistic electron beams in intense laser pulses

Longitudinal and transverse cooling of relativistic electron beams in intense laser pulses

Radiating electron source generation in ultraintense laser-foil interactions

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

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