Physics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..611..191b&link_type=abstract
SUPERSTRONG FIELDS IN PLASMAS: Second International Conference on Superstrong Fields in Plasmas, Second International Conference
Physics
1
Solitons, Bgk Modes, Laser-Induced Magnetic Fields In Plasmas, Particle-In-Cell Method, Electromagnetic Waves
Scientific paper
A three-dimensional sub-cycle relativistic electromagnetic soliton has been observed for the first time in a 3D Particle-in-Cell simulation of the propagation of an intense short laser pulse in an underdense plasma. The structure of the 3D soliton is identified. It resembles an oscillating electric dipole and has a strong charge separation and toroidal magnetic field component. We call this structure a TM-soliton (transverse magnetic). The 3D TM-soliton resembles a 2D P-soliton in the plane of electric field polarization, and a 2D S-soliton in the perpendicular plane. The core of the soliton is positively charged on average in time, and this results in its Coulomb explosion and in ion heating. Then the soliton evolves into a post-soliton, which is a slowly expanding quasi-neutral cavity in the plasma. .
Bulanov Sergei
Esirkepov Timur
Nishihara Katsunobu
Pegoraro Francesco
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