Abstract.
Examining the temporal evolution of parametric quasi-Cherenkov terahertz radiation (PTR) produced by a relativistic charged particle passing through an electromagnetic crystal, we found that the duration of PTR pulses can be much longer than the particle flight time through the crystal. This enables a thorough experimental investigation of the time structure of parametric quasi-Cherenkov T-ray pulses generated by electron bunches available with modern accelerators. The complicated time structure of parametric radiation can also be observed in natural crystals in the x-ray range.
