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Washington State University The Dynamic Compression Sector

Laser Shock Facility

The laser-shock facility includes a clean room to house the laser and a specialized target chamber that includes a cryogenic target holder and large ports for diagnostics. Both transmission and reflection X-ray diffraction geometries are accommodated by automated target and laser focal spot positioning capabilities. A high-speed X-ray chopper isolates single X-ray pulses. The X-ray pulses and laser trigger are synchronized to the storage ring RF clock to ensure precise timing of the X-ray and laser pulses.

Full descriptors of the DCS laser shock capabilities are documented within these publication:

Laser shock experiments are conducted using a 100J laser system with the following specifications:

  • 351 nm fixed wavelength on target
  • Focused spatial profile with a 500 micron diameter flat top
  • Flexible pulse shape control
  • High throughput (a shot every 25 minutes)
  • Beam smoothing of better than 8%
  • Capable of 5-15 ns pulse duration with smooth focal profile for uniform ramp and shock compression (250 μm and 500 μm spot size)
  • Tunable UV laser pulse energy on target, 30-90% of full UV pulse energy, 10% increment, no distortion of laser pulse shape
  • Highly flexible target chamber with translation stage and 135° rotation to vary angle between x-ray and laser beams
  • Multiple ports for simultaneous diagnostics
  • Excellent synchronization (<200 ps) between laser pulse and single x-ray pulse (isolated with high speed chopper) to obtain real-time, x-ray data
  • LineVISAR and/or point VISAR diagnostic capabilities for each experiment
  • Target holder for up to 16 targets
  • U17.2 (24 keV, 1st harmonic)

Personnel Requirements:

  • Please limit visiting experimenters to five or less

Target Requirements: