Relativistic solitons in magnetized plasmas

The results of analytical and numerical investigations on the properties of one-dimensional (nondrifting) solitons of relativistic amplitude, in the p resence of an externally imposed uniform magnetic field B-0, are presented and compared with those of the unmagnetized plasma theory (Esirkepov et al. , Pis'ma Zh. Eksp. Teor. Fiz. 68, 33 (1998) [JETP Lett. 68, 36 (1998)]). Th e presence of a uniform longitudinal magnetic field, the intensity of which corresponds to an electron cyclotron frequency Omega(e) = eB(0)/m(e)c that is a non-negligible fraction of the laser frequency Omega(0), has importan t consequences on the properties of relativistically intense solitons. The region of the parameter space (omega(0),Omega(e)) where magnetized solitons exist is determined analytically, and new conditions of breaking due to th e total density depletion are given. It is shown that stable high energy ma gnetized solitons can be produced.