INFLUENCE OF ELECTRON COLLISIONS ON THE RESONANCE CONE PHENOMENON IN A COLD MAGNETIZED PLASMA

We present a theoretical study of the potential produced by an antenna immersed in a cold magnetized plasma. This phenomenon is described in the literature as the ''resonance cone'' phenomenon. In this work, we take into account electron collisions with other particles (neutral o r charged). We show that the domain-in terms of frequencies-where the resonance cone exists is drastically reduced for a collisional plasma. Furthermore, the resonance cone peak is shifted by collisions, so tha t the usual formula used to compute the electronic density is not quit e exact. All the calculations are done with a finite magnetic field.