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Wakefield driven by Gaussian (1,0) mode laser pulse and laser-plasma electron acceleration
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View: Figures


Image of FIG. 1.
FIG. 1.

Bubble structure and electron bunches in the wakefield driven by Gaussian (0,0) mode laser pulse (a) and Gaussian (1,0) mode laser pulse (b). The velocity distribution of electrons located at the front of electron wall of (b) is presented in (c). The simulation parameters are as follows: laser pulse’s wavelength is 1053 nm, pulse duration is 20 fs, the radius of the laser pulse is 5 and laser intensity is , plasma density is , and the plasma’s thickness is 110 , where is the laser wavelength.

Image of FIG. 2.
FIG. 2.

Electromagnetic field distribution at 421 fs for the case of Fig. 1(b). The amplitude of longitudinal electric field , transverse electric field , and transverse magnetic field are shown in [(a)–(c)], respectively.

Image of FIG. 3.
FIG. 3.

Self-bunching effect of accelerated electron beams. The distributions of electron density at 421, 447, and 474 fs are presented in [(a)–(c)]. As a comparison [(d)–(f)] show the width and density of the upper electron beam at the corresponding time. The coordinates are the positions alone the black line in [(a)–(c)], where electron density reaches the maximum at the central point.

Image of FIG. 4.
FIG. 4.

The output electron beams and the beam quality. (a) The distribution of electron density at 500 fs. [(b)–(d)] are the energy spectrums of the three output electron beams in (a), respectively, where denotes the number of super particles, a super particle contains about 1460 electrons. [(e)–(g)] are the corresponding velocity distributions of the electron beams.


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Scitation: Wakefield driven by Gaussian (1,0) mode laser pulse and laser-plasma electron acceleration