A comprehensive survey of recent theoretical and experimental progress in the area of electron-photon interaction and dense media. A state-of-the-art discussion of radiation production, with descriptions of new ideas and technologies that enhance the production of X-rays in the form of channelling, transition and parametric X-ray production. Progress in electron beam physics to produce sub-picosecond electron bunches from low-energy linear accelerators make it possible to produce coherent, high brightness, submillimeter radiation and sub-picosecond X-ray pulses. Micro-undulators in the form of bent crystalline structures hold great promise as future X-ray sources.

1 Overview of Radiation from Dense Media.- 2 Channeling Radiation: A Historical Perspective.- 3 Parametric X-ray Radiation, Transition Radiation and Brems- Strahlung in X-ray Region. A Comparative Analysis.- 4 X-rays from Relativistic Electrons in Condensed Media.- 5 A Semiclassical Approach to the Radiation Damping Force.- 6 Optical Transition and Diffraction Radiation Diagnostics for Relativistic Charged Particle Beams.- 7 Resonance Transition Radiation.- 8 Coherent Radio-Wave Transition Radiation (CRTR) of Periodic Bunches.- 9 Experiments with Stimulated Transition Radiation.- 10 Investigations and Properties of PXR.- 11 On the Line Shape of Backward Emitted Parametric X-Radiation.- 12 Parametric X-ray Radiation (PXR) Produced in Carbon Single Wall Nanotubes (SWNT) and Fullerites.- 13 Bunch Coherence in Parametric X-ray Radiation.- 14 Coherent Radiation from Relativistic Electrons in Oriented Crystal.- 15 Particle Acceleration in Crystalline and Nanotube Undulators Taking into Account the Medium Polarization.- 16 Channeling Radiation from Thick Crystals and at High Electron-Bunch Charges.- 17 Quantum-Mechanical Calculation of the Channeling Radiation Produced in a Periodically Distorted Crystal.- 18 Channeling in Nanotubes and Fullerites.- 19 Resonance Tunneling Mechanism of Field Emission from Carbon Nanotube.- 20 Photon Emission by Ultra-Relativistic Positrons in Crystalline Undulators.- 21 Crystalline Micro Undulator.- 22 The Influence of Strong Crystalline Fields on QED-Processes Investigated Using Diamond Crystals ? Crystals in ?,? Colliders.- 23 Effect of Density Correlations on the Coherency of Relativistic Bunch Radiation.- 24 Vibrating Wires Fence as A Negligibly Destructive Beam Profile and Beam Position Monitor.- 25 New Radiation with Non-LinearDependence on Electron Beam Intensity.- 26 The Radiation Source ELBE at the Research Center Rossendorf.- 27 Production and Use of Femtosecond Electron Bunches.- 28 Armenian Light Source, CANDLE.- 29 Insertion Devices for the CANDLE Light Source.- 30 Design Study of Diffraction Beamline for CANDLE.- 31 Material Science Application on CANDLE.- 32 Structural Molecular Biology - The New Perspective for Regional Science.- 33 An Outlook for Biopolymer and Ligands Study on CANDLE.- 34 Environmental Investigations in Armenia.