中国物理B ›› 2006, Vol. 15 ›› Issue (9): 2046-2052.doi: 10.1088/1009-1963/15/9/026
• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇 下一篇
李百文1, IshiguroS2, SkoricMM2
Li Bai-Wen(李百文)a), Ishiguro Sb), and Skoric M Mb)
摘要: 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.
中图分类号: (Gas lasers including excimer and metal-vapor lasers)