On the design of experiments for the study of extreme field limits in the interaction of laser with ultrarelativistic electron beam

Bulanov, Sergei V.; Esirkepov, T. Zh.; Hayashi, Yukio; Kando, M.; Kiriyama, Hiromitsu; Koga, James; Kondo, Kimito; Kotaki, Hajime; Pirozhkov, Alexander S.; Bulanov, Stepan; Zhidkov, Alexei; Chen, P.; Neely, D.; Kato, Yoshiaki; Narozhny, N. B.; Korn, G.

doi:10.1016/j.nima.2011.09.029

Cited by 81 publications

(72 citation statements)

References 80 publications

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“…(i) a > 1, the relativistic interaction regime (Mourou et al 2006); (ii) a > ε −1/3 rad , the interaction becomes radiation dominated (Zhidkov et al 2002;Bulanov et al 2004b;Bashinov & Kim 2013); (iii) χ e 1 the quantum effects begin to manifest themselves (Di Piazza, Hatsagortsyan & Keitel 2010;Bulanov et al 2011aBulanov et al , 2015; and (iv) χ e > 1, χ γ > 1 marks the condition for the EM avalanche (Bulanov et al 2010a;Fedotov et al 2010;Nerush et al 2011;Bulanov et al 2013), which is the phenomenon of exponential growth of the number of electron-positrons and photons in the strong EM field, being able to develop. These conditions can be supplemented by αa > 1, which indicates that the number of photons emitted incoherently per laser period can be larger than unity as has been noted by Di .…”

Section: S V Bulanov and Othersmentioning

confidence: 99%

“…The length of the long range flight can be found from consideration of the charged particle momentum losses due to radiation friction as in Bulanov et al (2011a). Under certain conditions (in the high intensity and/or low frequency limit) the nonlinear dissipation mechanism stabilizes the particle motion causing the particle trapping within a narrow region located near the electric field maximum.…”

Section: Electron Interaction With Four P-polarized Em Wavesmentioning

confidence: 99%

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Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

et al. 2017

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The multiple colliding laser pulse concept formulated by Bulanov et al. (Phys. Rev. Lett., vol. 104, 2010b, 220404) is beneficial for achieving an extremely high amplitude of coherent electromagnetic field. Since the topology of electric and magnetic fields of multiple colliding laser pulses oscillating in time is far from trivial and the radiation friction effects are significant in the high field limit, the dynamics of charged particles interacting with the multiple colliding laser pulses demonstrates remarkable features corresponding to random walk trajectories, limit circles, attractors, regular patterns and Lévy flights. Under extremely high intensity conditions the nonlinear dissipation mechanism stabilizes the particle motion resulting in the charged particle trajectory being located within narrow regions and in the occurrence of a new class of regular patterns made by the particle ensembles.

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Section: S V Bulanov and Othersmentioning

confidence: 99%

Section: Electron Interaction With Four P-polarized Em Wavesmentioning

confidence: 99%

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

et al. 2017

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“…We note that effectively the ion acceleration mechanisms in Fig. 1 are bound by two conditions d e /λ ≤ 1 and a 0 ≤ ε −1/3 rad , where ε rad is the parameter governing the strength of the radiation reaction effects [39]. The first of these boundaries states that for increasingly underdense plasma the ion acceleration mechanisms, which are mentioned in Fig.…”

Section: Introductionmentioning

confidence: 93%

“…[23]. The second boundary corresponds to the threshold [39] of the radiation reaction and quantum recoil effects. These effects for laser intensities larger than 10 23 W/cm 2 significantly alter the process of ion acceleration, which was illustrated in Refs.…”

Section: Introductionmentioning

confidence: 99%

Radiation pressure acceleration: The factors limiting maximum attainable ion energy

et al. 2016

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Radiation pressure acceleration (RPA) is a highly efficient mechanism of laser-driven ion acceleration, with with near complete transfer of the laser energy to the ions in the relativistic regime. However, there is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. The tightly focused laser pulses have group velocities smaller than the vacuum light speed, and, since they offer the high intensity needed for the RPA regime, it is plausible that group velocity effects would manifest themselves in the experiments involving tightly focused pulses and thin foils. However, in this case, finite spot size effects are important, and another limiting factor, the transverse expansion of the target, may dominate over the group velocity effect. As the laser pulse diffracts after passing the focus, the target expands accordingly due to the transverse intensity profile of the laser. Due to this expansion, the areal density of the target decreases, making it transparent for radiation and effectively terminating the acceleration. The off-normal incidence of the laser on the target, due either to the experimental setup, or to the deformation of the target, will also lead to establishing a limit on maximum ion energy.

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“…DOI: 10.1103/PhysRevLett.118.154803 The interaction of charged particles with ultraintense electromagnetic (EM) pulses is the cornerstone of a newly emerging area of research, high intensity particle physics, located at the intersection of quantum electrodynamics (QED) and the theory of strong EM background fields. The latter significantly alter the physics of typical QED processes, leading to effects not encountered in perturbative quantum field theory [1][2][3][4][5][6]. Recently, there has been a surge of interest in these processes due to the planning and realization of new laser facilities, which will be able to deliver EM pulses of unprecedented intensities to test the predictions of high intensity particle physics [2].…”

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Depletion of intense fields

Bulanov¹,

Seipt²,

Heinzl³

et al. 2017

AIP Conference Proceedings

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The interaction of charged particles and photons with intense electromagnetic fields gives rise to multiphoton Compton and Breit-Wheeler processes. These are usually described in the framework of the external field approximation, where the electromagnetic field is assumed to have infinite energy. However, the multiphoton nature of these processes implies the absorption of a significant number of photons, which scales as the external field amplitude cubed. As a result, the interaction of a highly charged electron bunch with an intense laser pulse can lead to significant depletion of the laser pulse energy, thus rendering the external field approximation invalid. We provide relevant estimates for this depletion and find it to become important in the interaction between fields of amplitude a 0 ∼ 10 3 and electron bunches with charges of the order of 10 nC. DOI: 10.1103/PhysRevLett.118.154803 The interaction of charged particles with ultraintense electromagnetic (EM) pulses is the cornerstone of a newly emerging area of research, high intensity particle physics, located at the intersection of quantum electrodynamics (QED) and the theory of strong EM background fields. The latter significantly alter the physics of typical QED processes, leading to effects not encountered in perturbative quantum field theory [1][2][3][4][5][6]. Recently, there has been a surge of interest in these processes due to the planning and realization of new laser facilities, which will be able to deliver EM pulses of unprecedented intensities to test the predictions of high intensity particle physics [2]. Moreover, the development of compact multi-GeV laser electron accelerators [1,2,7,8] adds another component necessary to carry out these studies.Here, we will assume that the strong EM field is provided by an ultraintense laser (pulse) with wave vector k, central frequency ω ¼ 2π=λ in the optical regime, and electric field magnitude E. The interactions of this strong field with photons and charged particles are parametrized in terms of the following parameters (we use natural units throughout, Here, e and m are electron charge and mass, F μν is the EM field tensor, while p ν and k 0 ν denote the four momenta of electron and photon probing the laser. The parameter a 0 is usually referred to as the classical nonlinearity parameter, since its physical meaning is the energy gain of an electron (in units m) traversing a reduced wavelength ƛ ¼ 1=ω of the field. For a 0 > 1 the electron or positron motion in such a field becomes relativistic.The parameter E S characterizes a distinct feature of QED, the ability to produce new particles from vacuum. This happens when an energy of mc 2 is delivered across an electron Compton wavelength ƛ e ¼ 1=m, which is precisely achieved by E S [10]. The parameters χ e and χ γ characterize the interaction of charged particles and photons with the strong EM field. For example, χ e is the EM field strength in the electron rest frame in units of E S . Quantum effects become of crucial importance when E ≈ E S or χ ...

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On the design of experiments for the study of extreme field limits in the interaction of laser with ultrarelativistic electron beam

Cited by 81 publications

References 80 publications

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

Charged particle dynamics in multiple colliding electromagnetic waves. Survey of random walk, Lévy flights, limit circles, attractors and structurally determinate patterns

Radiation pressure acceleration: The factors limiting maximum attainable ion energy

Depletion of intense fields

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