On the problems of relativistic laboratory astrophysics and fundamental physics with super powerful lasers

Bulanov, Sergei V.; Esirkepov, T. Zh.; Kando, M.; Koga, James; Kondo, Kimito; Korn, G.

doi:10.1134/s1063780x15010018

Cited by 126 publications

(103 citation statements)

References 196 publications

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“…rad (or χ e > 1), the quantum effects begin to manifest themselves [8][9][10]; and (iv) χ e > 1, χ γ > 1, the interaction leads to an avalanche [11][12][13][14], the exponential growth of the electron-positrons and photons number. Here ǫ rad = 4πr e /3λ is the parameter indicating the strength of radiation reaction effects, r e = α /m e c is the classical electron radius.…”

Section: The Second Parameter Ismentioning

confidence: 99%

“…The parameter χ e,γ characterizes the interaction of electrons (positrons) and photons with the EM field. Depending on the energy of charged particles and field strength the interaction happens in one of the following regimes parametrized by a 0 and χ e,γ : (i) a 0 > 1, the electron dynamics is relativistic; (ii) a 0 > ǫ −1/3 rad , the interaction becomes radiation dominated; (iii) a 0 > (2α/3) 2 ǫ −1 rad (or χ e > 1), the quantum effects begin to manifest themselves [8][9][10]; and (iv) χ e > 1, χ γ > 1, the interaction leads to an avalanche [11][12][13][14], the exponential growth of the electron-positrons and photons number. Here ǫ rad = 4πr e /3λ is the parameter indicating the strength of radiation reaction effects, r e = α /m e c is the classical electron radius.…”

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confidence: 99%

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Electron dynamics andγande−e+production by colliding laser pulses

et al. 2016

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The dynamics of an electron bunch irradiated by two focused colliding super-intense laser pulses and the resulting γ and e − e + production are studied. Due to attractors of electron dynamics in a standing wave created by colliding pulses the photon emission and pair production, in general, are more efficient with linearly polarized pulses than with circularly polarized ones. The dependence of the key parameters on the laser intensity and wavelength allows to identify the conditions for the cascade development and γe − e + plasma creation. With the advent of 10 PW laser facilities, the new and so far unexplored field of ultra-intense laser matter interaction will become accessible experimentally [1]. The intensities of the order of 10 23−24 W/cm 2 will be achieved in these interactions, therefore the possibility of efficient generation of gamma-ray photons or even electronpositron pairs has attracted much attention in the last decade (see review article [2] and references therein). In a strong electromagnetic field, electrons can be accelerated to such high energy that the radiation reaction starts to play an important role [3]. Moreover, a new regime of the interaction can be entered, dominated by quantum electrodynamics (QED) effects such as pair production and cascade development [2,4]. If a photon with sufficient energy is emitted due to multiphoton Compton scattering and then interacts with n laser photons, new electron-positron pair can be created via the multiphoton Breit-Wheeler process [5]. Since the probabilities of the photon emission and pair creation depend on the particle momentum, on the electromagnetic field strength, and on their mutual orientation, it is necessary to elucidate the motion of electrons (positrons) in the electromagnetic field in the strong radiation reaction regime.In this Letter we present the analysis of the electron motion and photon emission modeled as a discreet process in the electromagnetic (EM) standing wave (SW) generated by two colliding focused short super-intense laser pulses interacting with an electron bunch. The interaction of charged particles with an intense EM fields is characterized by two dimensionless relativistically invariant parameters [6]. First parameter is a 0 = eE 0 /m e ω 0 c, the dimensionless EM field amplitude, which measures the energy gain of an electron over the field wavelength in units of 2πm e c 2 . It is often referred to as the classical nonlinearity parameter. Here e and m e are the electron charge and mass, E and ω 0 are EM field strength and frequency, c is the speed of light, respectively. The second parameter is, where E S = m 2 e c 3 /e ≃ 1.3 × 10 18 V/m [7], is the Planck constant, and F µν is the EM field tensor. The parameter χ e,γ characterizes the interaction of electrons (positrons) and photons with the EM field. Depending on the energy of charged particles and field strength the interaction happens in one of the following regimes parametrized by a 0 and χ e,γ : (i) a 0 > 1, the electron dynamics is relativistic; (ii) a 0 > ǫ −1...

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Section: The Second Parameter Ismentioning

confidence: 99%

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confidence: 99%

Electron dynamics andγande−e+production by colliding laser pulses

et al. 2016

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“…The present review article focuses on the analytical theory of nonlinear interactions of intense electromagnetic waves with relativistic plasmas related to the RFM concept. The experimental results demonstrating the RFM concept in the high intensity laser interaction with plasmas and corresponding computer simulations can be found in the review articles [2,7,8,11,17] Change of the frequency and amplitude of an electromagnetic wave reflected by moving mirror occurs due to the double Doppler effect. The corresponding theory of the light reflection from the mirror moving in vacuum with arbitrary (subluminal) velocity was formulated by A. Einstein in his paper on the special theory of relativity [1].…”

Section: Introductionmentioning

confidence: 99%

Relativistic mirrors in laser plasmas (analytical methods)

Bulanov

Esirkepov

Kando

et al. 2016

Plasma Sources Sci. Technol.

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Relativistic flying mirrors in plasmas are realized as thin dense electron (or electron-ion) layers accelerated by high-intensity electromagnetic waves to velocities close to the speed of light in vacuum. The reflection of an electromagnetic wave from the relativistic mirror results in its energy and frequency changing. In a counter-propagation configuration, the frequency of the reflected wave is multiplied by the factor proportional to the Lorentz factor squared. This scientific area promises the development of sources of ultrashort X-ray pulses in the attosecond range. The expected intensity will reach the level at which the effects predicted by nonlinear quantum electrodynamics start to play a key role.

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“…Studies of the high energy ion generation in the interaction between an ultraintense laser pulse and a small overdense targets, are of fundamental importance for various research fields ranging from the developing the ion sources for thermonuclear fusion and medical applications to the investigation of high energy density phenomena in relativistic astrophysics (see review articles [1][2][3][4][5][6][7] and the literature cited therein).…”

Section: Introductionmentioning

confidence: 99%

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

et al. 2015

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In the ion acceleration by radiation pressure a transverse inhomogeneity of the electromagnetic pulse results in the displacement of the irradiated target in the off-axis direction limiting achievable ion energy. This effect is described analytically within the framework of the thin foil target model and with the particle-in-cell simulations showing that the maximum energy of accelerated ions decreases while the displacement from the axis of the target initial position increases. The results obtained can be applied for optimization of the ion acceleration by the laser radiation pressure with the mass limited targets.

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On the problems of relativistic laboratory astrophysics and fundamental physics with super powerful lasers

Cited by 126 publications

References 196 publications

Electron dynamics andγande−e+production by colliding laser pulses

Electron dynamics andγande−e+production by colliding laser pulses

Relativistic mirrors in laser plasmas (analytical methods)

Effect of electromagnetic pulse transverse inhomogeneity on ion acceleration by radiation pressure

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