Login / Signup

Characterization of shaped Bragg crystal assemblies for narrowband x-ray imaging.

C StoecklT FilkinsR JungquistC MilehamNino PereiraS P ReganM J ShoupW Theobald
Published in: The Review of scientific instruments (2018)
X-ray imaging using shaped crystals in Bragg reflection is a powerful technique used in high-energy-density physics experiments. The characterization of these crystal assemblies with conventional x-ray sources is very difficult because of the required angular resolution of the order of ∼10 μrad and the narrow bandwidth of the crystal. The 10-J, 1-ps Multi-Terawatt (MTW) laser at the Laboratory for Laser Energetics was used to characterize a set of Bragg crystal assemblies. The small spot size (of the order of 5 μm) and the high power (>1018 W/cm2) of this laser make it possible to measure the spatial resolution at the intended photon energy. A set of six crystals from two different vendors was checked on MTW, showing an unexpectedly large variation in spatial resolution of up to a factor of 4.
Keyphrases
  • high resolution
  • high speed
  • dual energy
  • single molecule
  • solid state
  • mass spectrometry
  • room temperature
  • dna damage
  • electron microscopy
  • computed tomography
  • living cells
  • ionic liquid
  • contrast enhanced