Large amplitude electromagnetic solitons in intense laser plasma interaction
Li Bai-Wen(李百文)a), Ishiguro Sb), and Skoric M Mb)
a Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; b The Graduate University for Advanced Studies and National Institute for Fusion Science, Toki 509-5292, Japan
Abstract This paper shows that the standing, backward- and forward-accelerated large amplitude relativistic electromagnetic solitons induced by intense laser pulse in long underdense collisionless homogeneous plasmas can be observed by particle simulations. In addition to the inhomogeneity of the plasma density, the acceleration of the solitons also depends upon not only the laser amplitude but also the plasma length. The electromagnetic frequency of the solitons is between about half and one of the unperturbed electron plasma frequency. The electrostatic field inside the soliton has a one-cycle structure in space, while the transverse electric and magnetic fields have half-cycle and one-cycle structure respectively. Analytical estimates for the existence of the solitons and their electromagnetic frequencies qualitatively coincide with our simulation results.
Received: 06 January 2006
Revised: 10 February 2006
Accepted manuscript online:
PACS:
42.55.Lt
(Gas lasers including excimer and metal-vapor lasers)
(Resonators, cavities, amplifiers, arrays, and rings)
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10575015, 10445003,
10335020 and 10375011), the National Key Laboratory of Laser Fusion,
China (Grant No 51480010205ZW0901), the Scientific Research
Foundation for Returned Overseas Chinese Scholars, State Education
Ministry and the Foundation of China Academy of Engineering Physics
(Grant No 20060217).
Cite this article:
Li Bai-Wen(李百文), Ishiguro S, and Skoric M M Large amplitude electromagnetic solitons in intense laser plasma interaction 2006 Chinese Physics 15 2046
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