Dear Colleagues,

The XIV International Symposium “Radiation from Relativistic Electrons in Periodic Structures” and ” VIII International conference on Electron, Positron, Neutron and X-ray Scattering under External Influences” will be held in Tsaghkadzor, Republic of Armenia, September 18-22, 2023, The event is organized by the Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia and Yerevan State University