376 / 2019-02-28 15:09:08

Preliminary simulation modeling on XFEL-materials damage process

XFEL-material interaction,damage effects

全体主题 > Science and Technology based on XFEL

XFEL leads an extremely temporal and spatial diagnostic capability, with its ultra-high photon flux, ultra-short pulse-width and strong coherence. But these characteristics can also cause a damage of the diagnostic samples, which will affect the final result. In order to evaluate this sample damage of XFEL, a preliminary simulation model was built, including three modules in sequence: the XFEL-materials interaction (mainly about X-ray energy disposition and diagnostic signal generation in different XFEL parameters), energy diffusion in materials, damage creation and evolution. These three modules are simulated separately with Monte-Carlo method (MC) or Molecular Dynamic method (MD). With this preliminary model, some demonstrative results are finished to show the possibility of assessing damage effects.