  Existence of different types of interference in the spectrum of radiation
emitted by a doubly hard scattered electron is demonstrated. The spectrum
develops oscillations in two regions: the hard, where the oscillations depend
on the electron Lorentz factor, and the soft, where the oscillations depend on
the electron scattering angles. This interference pattern owes to the presence
of jetlike radiation configurations, formed by a piecewise-rectilinearly moving
electron and the accompanying photon. The corresponding nondipole decomposition
relation is derived. Notions describing proper field formation and
interference, and presumably being applicable more generally, are discussed in
detail.
