FLASH, acronym of Free Electron LASer in Hamburg, a particle accelerator-based soft X-ray laser located at the DESY accelerator facilities in Hamburg, Germany.[1][2] It can generate very powerful, ultrashort pulses (~10−14 s) of coherent radiation in the energy range 10 eV (electronvolt) to 200 eV. It started operation for external users in the year 2005 and is used for surface, molecular and atomic physics experiments.[3] Intended applications are also the imaging of single biological complex molecules with time resolution.


  1. ^ Beam Diagnostics in Superconducting Accelerating Cavities: The Extraction of ..., By Pei Zhang, Page 2, Free-Electron Laser in Hamburg (FLASH) [6, 10] is a free-electron laser (FEL) facility at DESY in Hamburg, Germany. It is driven by a superconducting linear accelerator (linac).
  2. ^ FLASH: the king of VUV and soft X-rays, By Jochen R Schneider, Nov 30, 2010, CERN Courier
  3. ^ "First results for the VUV-FEL radiation source - CERN Courier". CERN Courier. May 3, 2006.

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