COHERENT BREMSSTRAHLUNG IN PERIODICALLYDEFORMED CRYSTALS WITH A COMPLEX BASE

摘要

In the present paper, we investigate coherent bremsstrahlung of high energy electronsmoving in a periodically deformed single crystal with a complex base. The formula forcorresponding differential cross-section is derived for an arbitrary deformation field. Theconditions are discussed under which the influence of the deformation is important. Thecase is considered in detail when the electron enters into the crystal at small angles withrespect to a crystallographic axis. It is shown that in dependence of the parameters,the presence of the deformation can either enhance or reduce the bremsstrahlung cross-section.