On the Possibility of Abnormally Intense Radiation Due to the Rotation   of Electron Around a Dielectric Sphere
  The abnormally intense radiation due to the uniform rotation of electron around the equatorial plane of a dielectric sphere is obtained. It takes place when the sphere surface is at a specific distance from the electron orbit and when the Cherenkov condition for electron and the matter of the sphere is satisfied. 
L. Sh. Grigoryan, H. F. Khachatryan, S. R. Arzumanyan