How to Exploit Synchrotron Radiation for MHz Frame Rate X-ray Imaging
Hosted By: Gamma, X-Ray and Extreme UV Optics Technical Group
17 April 2018, 10:00 - 11:00
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Third generation synchrotron light sources provide hard X-rays with high photon flux, high degree of spatial coherence, ~100 ps pulse widths and megaHertz (MHz) repetition rates. The exploitation of these properties is an important key to probe transient in-material processes, which evolve on timescales governed by material sound speeds in the order of km/s (μm/ns), in optically opaque objects.
In this webinar hosted by the Gamma, X-Ray and Extreme UV Optics Technical Group, Dr. Margie Olbinado from the European Synchrotron Radiation Facility (ESRF) will discuss how MHz frame rate XPCI is a powerful diagnostic tool to observe instantaneous velocities and internal structures, which cannot be obtained from X-ray attenuation-contrast imaging and cannot be probed, or only partially probed, using conventional ultra high-speed optical shadowgraph techniques. The importance of multiple-frame recording to observations of stochastic transient processes which are impossible to be realized using single-shot or stroboscopic XPCI will be highlighted during the webinar.
What You Will Learn:
- The development of real-time X-ray phase-contrast imaging (XPCI) with single-pulse temporal resolution and multiple-frame recording up to MHz frame rates at the ESRF
- How to optimize image detection and visualizations of various transient processes such as crack propagation in glass, explosion during electric arc ignition in fuse, laser-induced micro-cavitations and jetting in water, and laser-shock-induced compression in polymeric foam
Who Should Attend:
- People interested in x-ray optics and instrumentation for large scale facilities
- Anybody who is interested in the development of ultra-fast short wavelength sources
Dr. Margie Olbinado, European Synchrotron Radiation Facility (ESRF)
Margie P. Olbinado is a post-doctoral scientist at the European Synchrotron Radiation Facility in Grenoble, France. She’s worked in close collaboration with Alexander Rack establishing single-bunch XPCI at beamline ID19. They have exploited the MHz repetition rates of synchrotron X-ray pulses to achieve single-bunch XPCI with millions frames per second acquisition rates. Their work opens up new possibilities for visualizing stochastic transient processes that cannot be obtained from X-ray attenuation-contrast imaging and cannot or only partially be probed using conventional ultra high-speed optical shadowgraph techniques. Before coming to ESRF, Margie studied at the University of Tokyo under the supervision of Prof. Atsushi Momose. Her PhD dissertation (2013) was dedicated to grating-based X-ray phase imaging instrumentation, including time-resolved applications with synchrotron X-rays. She did her earlier studies (BS Physics 2004;MS Physics 2006) at the University of the Philippines.