[en] It is suggested to trigger fusion in a central filament by compressing and heating it via the kinetic energy cumulated in an outer annular shell. This shell is imploded by an electric pinch during a long discharge time. In order to properly drive the filament implosion, an axial magnetic is generated around the filament by the action of a circularly polarized laser light (CPLL). The field acts as a magnetic cushion in order to compress the central filament before it is heated. First estimate points out that large energy gain could be reached in a powerful Z-pinch device combined with nanosecond laser. The main principles of Magnetized Target Fusion (MTF) are: 1. Thermal insulation by applying a strong magnetic field B_o. The initial B_o must be trapped in the imploding target during its compression. From magnetic flux conservation the magnetic field will increase, thus reducing the thermal conductivity. 2. Analogous to Inertial Confinement Fusion (ICF), the PdV work of the imploding liners or other z-pinch devices, heats the fuel by compressing it directly or indirectly. 3. The compression of the target and the increase in the magnetic field may lead to alpha particle energy deposition inside the plasma. 4. MTF needs about the same energy/DT mass for ignition as ICF. Large (mega-gauss) magnetic fields are produced by laser plasma interaction when a high irradiance laser pulse is focused on a solid target. One of the most studied processes inducing toroidal megagauss magnetic fields in laser plasma interaction is the grad n x grad T mechanism, where n is the plasma density and T its temperature. This mechanism is independent of the polarization of the laser light. Recently the production of an axial magnetic field by circularly polarized laser light interaction with plasma, the inverse Faraday effect, was measured experimentally. The experiments were performed with Nd:YAG laser, with a wavelength of 1.06 m and a pulse duration of 7 ns, in a range of irradiance from 10⁹ to 10¹⁴ W/cm². Axial magnetic fields of 2.2 MG were measured for 10¹⁴ W/cm². In this paper it is suggested to use these magnetic fields in magnetized plasma fusion devices