Abstract

The generation of an axial magnetic field caused by the interaction of plane polarized electromagnetic waves with a laser produced plasma has been investigated in the system of Lagrangian cylindrical coordinates. Our calculations show that for a high frequency laser (viz. Nd-glass laser of wavelength 1.06 μm and power flux 5 × 10 5 W/cm 2) the axial magnetic field due to the electron response is approximately 0.24 MG in the plasma region of density 0.1 N c (where N c is the critical density) and the Faraday rotation angle is roughly 1.2° for a density gradient scale length 5 μm. Such a field inhibits the lateral energy transport, but enhances the axial energy propagation.

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