Electron self-injection and acceleration in a hollow plasma channel driven by ultrashort intense laser pulses

Deng, Suhui; Liu, Mingping

doi:10.1088/1674-1056/28/4/044101

Cited by 3 publications

(2 citation statements)

References 34 publications

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“…[3][4][5][6] This has led researchers to explore more affordable and compact accelerating solutions. [7][8][9][10][11][12][13] One such solution is the dielectric laser accelerators (DLAs), which is based on laser-dielectric material interaction and has attracted increasing interest in recent years. [14][15][16][17][18][19][20] DLAs can achieve acceleration gradients exceeding 1 GV/m, which is significantly higher than those in conventional accelerators.…”

Section: Introductionmentioning

confidence: 99%

Structure and material study of dielectric laser accelerators based on the inverse Cherenkov effect

Sun

Luo

et al. 2023

Chinese Phys. B

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Dielectric laser accelerators (DLAs) are considered promising candidates for on-chip particle accelerators that can achieve high acceleration gradients. This study explores various combinations of dielectric materials and accelerated structures based on the inverse Cherenkov effect. The designs utilize conventional processing methods and laser parameters currently in use. We optimize the structural model to enhance the gradient of acceleration and the electron energy gain. To achieve higher acceleration gradients and energy gains, the selection of materials and structures should be based on the initial electron energy. Furthermore, we observe that the variation of the acceleration gradient of the material is different at different initial electron energies. These findings suggest that on-chip accelerators are feasible with the help of these structures and materials.

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Section: Introductionmentioning

confidence: 99%

Structure and material study of dielectric laser accelerators based on the inverse Cherenkov effect

Sun

Luo

et al. 2023

Chinese Phys. B

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“…Many papers have investigated these focusing effects in the uniform plasma or preformed channel cases. [14][15][16][17][18][19][20] It has been found that the spot size of an laser pulse can evolve along the propagating axis with constant, periodically focusing and defocusing oscillations, and catastrophic focusing. Further, Zhang et al has investigated the existence conditions of solitary waves in a parabolic plasma channel.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear propagation of an intense Laguerre–Gaussian laser pulse in a plasma channel*

Liu¹,

Zhang²,

Deng³

2021

Chinese Phys. B

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The nonlinear propagation of an intense Laguerre–Gaussian (LG) laser pulse in a parabolic preformed plasma channel is analyzed by means of the variational method. The evolution equation of the spot size is derived including the effects of relativistic self-focusing, preformed channel focusing, and ponderomotive self-channeling. The parametric conditions of the LG laser pulse and plasma channel for propagating with constant spot size, periodically focusing and defocusing oscillation, catastrophic focusing, and solitary waves are obtained. Compared with the laser pulse with fundamental Gaussian (FG) mode, it is found that the effect of vacuum diffraction is reduced by half and the effects of relativistic and wakefield focusing are decreased by a quarter due to the hollow transverse intensity profile of the LG laser pulse, while the effect of channel focusing is the same order of magnitude with that of the FG laser pulse. Thus, the matched condition for the intense LG laser pulse with constant spot size is released obviously, while the parameters of the laser and plasma for the existence of solitary waves nearly coincide with those of the FG laser pulse.

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Optimized plasma waveguides for single-stage bubble acceleration of monoenergetic electron beams with enhanced quality

Fazeli

2023

Physics of Plasmas

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The laser wakefield acceleration in bubble regime is now a promising method for producing high-quality electron beams, which is crucial to the development of the next-generation compact and low-cost particle accelerators. In this paper, we demonstrate the possibility of controlling particle injection and electron beam quality in sub-petawatt laser pulse interaction with simple plasma waveguides with a radially step-like density profile. Fully relativistic particle-in-cell calculations for different laser intensities indicate that by considering a sufficiently low electron density for a central plasma channel to ensure both increased acceleration length and formation of a well-structured bubble, one can optimize the surrounding plasma density and central channel diameter to reach the best injection conditions and produce a high-quality monoenergetic electron beam with improved peak energy and reduced energy spread. Calculations are performed for 33 fs, 140–315 TW laser pulses interacting with a ∼2 cm long plasma waveguide. It is demonstrated that by using the proposed scheme in optimized conditions, monoenergetic electron beams with peak energies 3–4 GeV and energy spreads less than 1.5% can be obtained in a single acceleration length of 1.85 cm. The beam charge and conversion efficiency of laser energy into the beam energy were also enhanced to values around 195 pC and 14.7%, respectively.

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Electron self-injection and acceleration in a hollow plasma channel driven by ultrashort intense laser pulses

Cited by 3 publications

References 34 publications

Structure and material study of dielectric laser accelerators based on the inverse Cherenkov effect

Structure and material study of dielectric laser accelerators based on the inverse Cherenkov effect

Nonlinear propagation of an intense Laguerre–Gaussian laser pulse in a plasma channel*

Optimized plasma waveguides for single-stage bubble acceleration of monoenergetic electron beams with enhanced quality

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