Observation of anomaly in angular distribution of parametric x-ray scattering
Afanasenko V. P. , Baryshevskii V. G., Gatsikha S. V. , Zuevskii R. F. , Livshits M. G., Lobko A. S. , Moroz V. I. , Panov V. V. , Polikarpov I. V. , Potsiluiko V. P. , Safronov P. F. , Yurtsev A. O.
A strong, narrow peak due to a multiwave emission mechanism has been observed in the angular distribution of parametric χ radiation. The intensity and angular width of this peak are determined and compared with those in the case of the two-wave mechanism.