The performance of x-ray free electron lasers and ultrafast diffraction experiments is largely dependent on the brightness sources from photoinjectors. maximum photoinjectors at a particular accelerating gradient limited by mean transverse energy (MTE) electrons emitted photocathodes. For high quantum efficiency (QE) cathodes like alkali-antimonide thin films, which are essential to mitigate ef...

X-ray topography is a group of methods for obtaining diffraction images structural defects in crystals. Among them, section techniques are distinguished by their abilities acquiring quantitative information about based on the analysis images. For this purpose, special applications dynamic theory being developed. The interference wave fields excited crystal an beam basis methods. Their sensitivi...