Axial magnetic fields in relativistic self-focusing channels.
Based on an improved cavitation model for the electron dynamics, an exact analysis is presented of the generation of axial magnetic fields in the relativistic self-focusing channels produced by circularly polarized light in plasmas. Two kinds of waveguiding structures are considered: single-channel waveguides and plasma filaments surrounded by a light field. It is found that due to large electron density gradients in the cavitation plasma, magnetic fields of megagauss values with opposite directions separated by a neutral sheet, where the magnetic field passes through zero, can be produced.
Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.
A
A
Kim
M
M
Tushentsov
D
D
Anderson
M
M
Lisak