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  • Topic: MeV-UED - SLAC National Accelerator Laboratory
    The MeV-UED instrument, part of the LCLS User Facility, is a powerful “electron camera” for the study of time-resolved, ultrafast atomic molecular dynamics in chemical and solid-state systems SLAC staff scientist Alexander Reid handles an interchangeable sample card used to hold samples during UED experiments
  • Ultrafast electron diffraction (UED) - SLAC National Accelerator Laboratory
    Ultrafast electron diffraction can reveal motions of electrons and atomic nuclei within molecules that take place in less than a tenth of a trillionth of a second – information that will benefit groundbreaking research in materials science, chemistry and biology MeV-UED page on LCLS website
  • Researchers catch protons in the act of dissociation with SLAC’s . . .
    The research was funded in part by the DOE Office of Science MeV-UED is an instrument of SLAC’s LCLS X-ray laser facility LCLS is a DOE Office of Science user facility Citation: Elio Champenois et al , Physical Review Letters, 5 Oct 2023 (10 1103 PhysRevLett 131 143001)
  • Image: UED gold diffraction | SLAC National Accelerator Laboratory
    UED gold diffraction This movie shows the transition of a gold sample from a solid (dotted pattern) to a liquid (ring pattern) after being heated by a laser pulse It was taken with SLAC’s ultrafast “electron” camera, an instrument for ultrafast electron diffraction (UED), in which a powerful electron beam scatters off the atoms in the
  • What will it take to bring fusion energy to the US power grid?
    We use the MeV-UED facility to study the structural materials needed for building a fusion target chamber These materials will endure harsh conditions, including radiation and high neutron flux, that can degrade them over time MeV-UED helps us understand how different materials will behave in those conditions and identify the most durable
  • Image: UED schematic | SLAC National Accelerator Laboratory
    UED schematic Schematic of SLAC’s new apparatus for ultrafast electron diffraction – one of the world’s fastest “electron cameras” – researchers can study motions in materials that take place in less than 100 quadrillionths of a second
  • SLAC researchers pioneer new methods in ultrafast science for sharper . . .
    MeV-UED takes snapshots by hitting samples with a beam of electrons and recording what happens in the material as the electrons pass through The result is a molecular movie that allows scientists to peer into the behavior of molecules and atoms at ultrafast speeds and gain insights into processes that are key to energy solutions and innovative
  • SLAC’s high-speed electron camera uncovers a new ‘light-twisting . . .
    Using SLAC’s instrument for ultrafast electron diffraction (MeV-UED), one of the lab’s world-leading tools for ultrafast science, researchers discovered how an ultrathin material can circularly polarize light This discovery sets up a promising approach to manipulate light for applications in optoelectronic devices
  • Image: UED gold melting | SLAC National Accelerator Laboratory
    UED gold melting This animation shows the results of a recent study at SLAC, in which researchers used a powerful beam of electrons to watch gold melt extremely rapidly after being heated by a laser pulse
  • SLAC Builds One of the Worlds Fastest Electron Cameras
    “UED has been under development for the past 10 to 15 years, but the repulsive forces between electrons in the electron beam limited the time resolution of previous experiments,” says the paper’s first author Stephen Weathersby, the facility manager of SLAC’s Accelerator Structure Test Area (ASTA), where the UED machine is installed





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