Electromagnetic radiation from line sources interacting with a moving magnetoplasma halfhyphen;space

摘要

The problem of electromagnetic radiation from the electric and the magnetic line sources interacting with a cold collisionless moving magnetoplasma halfhyphen;space has been treated. The ambient magnetic field lies parallel to the line source and is oriented normal to the direction of medium motion. For the configuration, theEandHmodes become independent, being capable of becoming excited, respectively, by a magnetic and an electric line source. Using the saddlehyphen;point method of integration, we have obtained the farhyphen;zone radiation fields and the radiation patterns for both line sources. It is found that the fields radiated by an electric line source remain unaffected by the presence of an ambient magnetic field. Numerical results for the farhyphen;zone radiation pattern, referring to a magnetic line source, are presented for several values of the parameters characterizing the electronhyphen;plasma density, the local magnetic field, and the velocity of the moving medium.