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31 Aug 2009

Volume 95, Issue 9, Articles (09xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 95, 091901 (2009); http://dx.doi.org/10.1063/1.3212896 (3 pages)

Noy Bassik, George M. Stern, and David H. Gracias
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Wakefield driven by Gaussian (1,0) mode laser pulse and laser-plasma electron acceleration

H. O. Che, Q. Kong, Q. Q. Mao, P. X. Wang, Y. K. Ho, and S. Kawata

Appl. Phys. Lett. 95, 091501 (2009); http://dx.doi.org/10.1063/1.3187221 (3 pages) | Cited 1 time

Online Publication Date: 2 September 2009

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An ultraintense Gaussian (1,0) mode pulsed laser applied to laser-plasma electron acceleration is investigated based on 2.5-dimensional particle-in-cell simulation (PIC). It has been found that Gaussian (1,0) mode laser pulse may blow out plasma electrons and form two symmetrical electron cavities with an electron wall between them. This electron wall separates two twisting bunches of transverse injected electrons and lets each of them be accelerated in one cavity, respectively. At the front of the wall, a bunch of reflux electrons with a magnetic field contributes to the electron self-bunching effect. This mechanism may generate two symmetrical, high-density, and monoenergetic electron beams with small transverse emittances.
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29.20.Ej Linear accelerators
52.38.Kd Laser-plasma acceleration of electrons and ions
52.38.Dx Laser light absorption in plasmas (collisional, parametric, etc.)
52.65.Rr Particle-in-cell method
41.75.Fr Electron and positron beams
29.27.Eg Beam handling; beam transport
29.27.Ac Beam injection and extraction
52.25.-b Plasma properties
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