Synchrotron Sources. Extension of Theory for Small Pitch Angles

We examine some of the features of synchrotron radiation which occur when relativistic particles move with small pitch angles in a magnetic field. The emission from individual particles is computed; the general properties of the emission from distributions of particles with small pitch angles are discussed; and, finally, the emissivities and degrees of polarization for several specific source models are presented. The application of these results to astrophysical phenomena are considered in the accompanying paper. Subject heading: synchrotron radiation