Sv. Blazhevich et al., OBSERVATION OF AN INTERFERENCE OF COHERENT BREMSSTRAHLUNG AND PARAMETRIC MECHANISMS FOR RADIATION BY RELATIVISTIC ELECTRONS IN A CRYSTAL, JETP letters, 59(8), 1994, pp. 524-526
Coherent emission of radiation by electrons with energies of 15 and 25
MeV at the (220) system of atomic planes in a silicon crystal 30 mum
thick has been studied experimentally. The interference of the mechani
sms of coherent bremsstrahlung and parametric radiation, recently pred
icted theoretically, has been observed for the first time.