The search for new sources of intense electromagnetic radiation

The search for new sources of intense electromagnetic radiation in different wavelength ranges has contributed in recent decades to the development of theoretical and experimental studies of various types of electromagnetic radiation by relativistic electrons in matter and in external fields. On the other hand, a number of problems can be significantly simplified by using monochromatic radiation, which can be obtained by choosing conditions suitable for the formation of the spectrum, for example, those under which a particle or an electromagnetic field carried by it experiences strictly periodic effects from the substance or an external field. One of the most promising directions today is the monochromatization of synchrotron radiation (SR). Synchrotron radiation is the one that occurs when a particle is deflected from a straight path by a magnetic field. This deviation occurs, in particular, in synchrotrons – cyclic accelerators of high-energy particles. SR has recently become the most important tool for studying the properties of matter and is used today in almost all areas of modern science. Among the main elements of modern SR sources, there are undulators and wigglers – periodic magnetic structures.