Inverse Faraday effect induced by radiative friction upon irradiation of a dense plasma by crossed multipetawatt laser beams

We discuss the possibility of experimentally realising the inverse Faraday effect induced by radiation friction upon irradiation of a dense plasma target with two crossed linearly polarised multipetawatt laser beams. The dependence of the maximum value of the excited longitudinal magnetic field and the size of the region occupied by this field on the angle 2Θ between laser beams is studied. It is shown that the use of a two-beam scheme increases multiply the amplitude of the excited magnetic field, which at intensities of ∼3×10²³ W·cm^–2 reaches 2–3 GG at beam convergence angles of 2Θ ≤ 10°.