Transient radiation of magnetic moment in plane-layered dielectric

The transient radiation of the magnetic moment in the plane-layered medium is considered. In order, to determine the electromagnetic field of the magnetic moment, in contrast to the known method of the field vectors, for the first time, the electric and magnetic Hertzian vectors are introduced as initial functions which turns out to be the most efficient for calculating the field amplitudes. This method can also be applied to calculate the field and power of the Cherenkov radiation of a charged particle with a magnetic dipole moment. The expressions are obtained for the Eigen field and the radiation field of a magnetic moment moving in media whose permittivity changes smoothly in the direction of motion. The radiation fields are estimated and the contribution of the magnetic transient radiation to the radiation of the particle is found. In particular, it is shown that in the interplanetary medium (in the ionosphere) the contribution of magnetic transient radiation becomes more significant in the ultra-relativistic case, in the region of small angles. The obtained results can be considered at the development of the devices for registration and identification of easy charged particles, having the magnetic moment: transient radiation detectors, and also for definition of transient radiation role in earth atmosphere and earth core, which are considered as plane-layered ones. (author)