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The interaction of laser with plasmas leads to many interesting phenomenawhich includes laser energy absorption, mode conversion, energetic particlegeneration etc. In this work, the excitation of Korteweg - de Vries (KdV)Alfven solitons in plasma is demonstrated with the help of 2-D Particle - In -Cell (PIC) simulations. For this purpose, the propagation of a pulsed $CO_2$(with a wavelength of $10 \mu m$) laser normally incident on an overdenseplasma target is considered in the presence of an external magnetic field. Themagnitude of the external magnetic field is chosen so as to have the electronsmagnetized and ions unmagnetized at the laser frequency. These solitonspropagate stably and are observed to be responsible for energetic electrongeneration as the background undisturbed electrons of the medium get reflectedfrom its front. It is also shown that subsequently, transverse modulationsappear in the structure which grow with time. With recent technologicaladvancements in the development of short pulse $CO_2$ lasers and also on thegeneration of magnetic fields of the order of tens of kilo - Tesla in thelaboratory, these studies have practical relevance and have a possibility ofgetting replicated in laboratory in near future.

Excitation of KdV Alfven solitons by a pulsed CO2 laser in plasma in the presence of an external magnetic field