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We show that the transverse component of the wakefield can be produced withthe application of an external magnetic field that generates radiation in theTHz range. For this, we carry out analytical and numerical calculations toevaluate the components of the wakefield in a realistic situation ofcollisional plasma. We observe that the wakefield in the direction of theexternal magnetic field is produced, though the components of the wakefield areobserved in the directions parallel and perpendicular to the direction ofpropagation of the laser and the magnetic field. Based on the approach ofperturbation technique under quasi-static approximation, a study is made on themagnitude of emitted radiation pulses from the wakefield for the case of lasersof super-Gaussian profile. The field of THz radiation is found to be enhancedwhen stronger magnetic field is applied; the same is the case for the lasers ofhigher index.

Strong Terahertz Radiation Generation via Wakefield in Collisional Plasma