Power Scaling for Collimated 
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-Ray Beams Generated by Structured Laser-Irradiated Targets and Its Application to Two-Photon Pair Production

Wang, T.; Ribeyre, X.; Gong, Zheng; Jansen, Oliver; d’Humières, E.; Stutman, D.; Toncian, T.; Arefiev, Alexey

doi:10.1103/physrevapplied.13.054024

Cited by 57 publications

(41 citation statements)

References 50 publications

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“…2012) and three-dimensional (Stark, Toncian & Arefiev 2016; Wang et al. 2020 a ) simulations. For the AP laser case, radial electron modulations are formed, but with outwards directionality.…”

Section: Resultsmentioning

confidence: 99%

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

et al. 2022

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We employ the $\lambda ^{3}$ regime where a near-single-cycle laser pulse is tightly focused, thus providing the highest possible intensity for the minimal energy at a certain laser power. The quantum electrodynamics processes in the course of the interaction of an ultra-intense laser with a solid target are studied via three-dimensional particle-in-cell simulations, revealing the generation of copious $\gamma$ -photons and electron–positron pairs. A parametric study of the laser polarisation, target thickness and electron number density shows that a radially polarised laser provides the optimal regime for $\gamma$ -photon generation. By varying the laser power in the range of 1 to 300 PW we find the scaling of the laser to $\gamma$ -photon energy conversion efficiency. The laser-generated $\gamma$ -photon interaction with a high- $Z$ target is further studied using Monte Carlo simulations revealing further electron–positron pair generation and radioactive nuclide creation.

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Section: Resultsmentioning

confidence: 99%

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

et al. 2022

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“…Relativistically transparent magnetic filaments promise to provide both a highly efficient laser-driven source of gamma rays and a unique and robust platform for the study of high-field physics. In 3D simulations, the conversion efficiency from laser energy into collimated MeV photons can exceed 1% [12]. This is substantially greater than presently demonstrated laser-driven sources of betatron and Compton x rays in the 100-keV to multi-MeV range, which typically feature efficiency of the order of 10 −6 or less [13].…”

Section: Introductionmentioning

confidence: 87%

“…Figure 2 presents a comparison with a data set of five simulations using the EPOCH code [23] that scaled the parameter R λ , as presented in Ref. [12]. The simulations used design values a 0 = 190, S α = 0.105, τ ν = 10.5, and varied R λ in the range 0.65 to 2.1, spanning the magnetic boundary value r mb /λ = f i /S α /π ≈ 1.2.…”

Section: Comparison To 3-d Pic Simulationsmentioning

confidence: 99%

“…Relativistic electron motion and volumetric laser-plasma interaction at supercritical densities combine to create a fascinating phenomenon: the relativistically transparent magnetic filament. [2][3][4][5][6][7][8][9][10][11][12] A schematic diagram of this phenomenon is shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…This is substantially greater than presently demonstrated laser-driven sources of betatron and Compton x rays in the 100-keV to multi-MeV range, which typically feature efficiency of the order of 10 −6 or less [13]. The prospect of generating copious multi-MeV photons in lasertarget interactions has sparked particular interest due to its many potential scientific and technology applications, such as Breit-Wheeler pair production [12], laboratory An intense laser (red) drives a relativistic current (blue) in a relativistically transparent plasma. The azimuthal magnetic field (orange) traps electrons (black) either within the laser radius R or a magnetic boundary r mb (see text).…”

Section: Introductionmentioning

confidence: 99%

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Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

Rinderknecht,

Wang,

Garcia

et al. 2021

Preprint

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Relativistic transparency enables volumetric laser interaction with overdense plasmas and direct laser acceleration of electrons to relativistic velocities. The dense electron current generates a magnetic filament with field strength of the order of the laser amplitude (>10 5 T). The magnetic filament traps the electrons radially, enabling efficient acceleration and conversion of laser energy into MeV photons by electron oscillations in the filament. The use of microstructured targets stabilizes the hosing instabilities associated with relativistically transparent interactions, resulting in robust and repeatable production of this phenomenon. Analytical scaling laws are derived to describe the radiated photon spectrum and energy from the magnetic filament phenomenon in terms of the laser intensity, focal radius, pulse duration, and the plasma density. These scaling laws are compared to 3-D particle-in-cell (PIC) simulations, demonstrating agreement over two regimes of focal radius. Preliminary experiments to study this phenomenon at moderate intensity (a 0 ∼ 30) were performed on the Texas Petawatt Laser. Experimental signatures of the magnetic filament phenomenon are observed in the electron and photon spectra recorded in a subset of these experiments that is consistent with the experimental design, analytical scaling and 3-D PIC simulations. Implications for future experimental campaigns are discussed.

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On the synergic approach toward the experimental realization of interesting fundamental science within the framework of relativistic flying mirror concept

Jeong,

Bulanov,

Valenta

et al. 2024

Rev. Mod. Plasma Phys.

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The relativistic flying parabolic mirror can provide a higher laser intensity than the intensity a current laser system can reach via the optical-focusing scheme. A weakly relativistic laser intensity (1.8 $$\times$$ × 10$$^{17}$$ 17 W/cm$$^2$$ 2 , $$\eta = 0.29$$ η = 0.29 ) can be intensified up to a super-strong intensity of $$>\textrm{1}\times$$ > 1 × 10$$^{27}$$ 27 W/cm$$^2$$ 2 ($$\eta \approx 2.2 \times 10^4$$ η ≈ 2.2 × 10 4 ) by the relativistic flying mirror. Such a super-strong field can be applied to study the strong-field quantum electrodynamics in perturbative and non-perturbative regimes. In this review, the analytic derivations on the field strength and distribution obtained by the ideal relativistic flying parabolic mirror have been shown under the 4$$\pi$$ π -spherical-focusing approach. The quantum non-linearity parameter is calculated when such a super-strong field collides with the high-energy $$\gamma$$ γ -photons. The peak quantum non-linearity parameter reaches above 1600 when the 1-GeV $$\gamma$$ γ -photon collides with a super-strong laser field reflected and focused by the relativistic flying mirror driven by a 10 PW laser pulse.

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Power Scaling for Collimated γ -Ray Beams Generated by Structured Laser-Irradiated Targets and Its Application to Two-Photon Pair Production

Cited by 57 publications

References 50 publications

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

Relativistically transparent magnetic filaments: scaling laws, initial results and prospects for strong-field QED studies

On the synergic approach toward the experimental realization of interesting fundamental science within the framework of relativistic flying mirror concept

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