Physics and Astronomy Colloquium
Science Enabled by 4th Generation Synchrotron Light Sources
4:00 pm –
5:00 pm
Theodore Jorgensen Hall
Room: 136
Target Audiences:
855 N 16th St
Lincoln NE 68588
Lincoln NE 68588
Additional Info: JH
Contact:
Physics Department, (402) 472-2770, paoffice2@unl.edu
Dr. Stephen Kevan will present his topic in person.
Abstract: I will describe ongoing accelerator upgrades that are increasing the x-ray brightness of synchrotron light sources by a factor of 100-1000, and elaborate examples of new science opportunities enabled by this ultrahigh brightness. The small size of the source and collimation of the photon beams from undulators will produce nearly diffraction-limited soft x-ray beams, allowing to large improvements in x-ray microscopy, x-ray photon correlation spectroscopy, and experiments with shaped x-ray wavefronts. I will illustrate how the improved spectral, spatial, and temporal sensitivity of these beams will provide new probes of functioning mesoscale structures, thereby bridging the nanoscale and mesoscale in various contexts.
Abstract: I will describe ongoing accelerator upgrades that are increasing the x-ray brightness of synchrotron light sources by a factor of 100-1000, and elaborate examples of new science opportunities enabled by this ultrahigh brightness. The small size of the source and collimation of the photon beams from undulators will produce nearly diffraction-limited soft x-ray beams, allowing to large improvements in x-ray microscopy, x-ray photon correlation spectroscopy, and experiments with shaped x-ray wavefronts. I will illustrate how the improved spectral, spatial, and temporal sensitivity of these beams will provide new probes of functioning mesoscale structures, thereby bridging the nanoscale and mesoscale in various contexts.