THXXPLS3
SLAC, Menlo Park, California, USA
* X.J. Wang et al, Phys. Rev. E , 54, No.4, R3121 -3124 (1996).
** M. Z. Mo et al, Science 360 1451-1455 (2018).
*** J. Yang et al, Science, 361, 64-67. (2018).
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THXXPLS3 |
Science Frontiers of Megaelectronvolt Ultrafast Electron Probes | |
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Ultrafast electron probe is the new frontier for electron scattering instrumentations. The development in high-brightness electron beam made it feasible to explore megaelectronvolt electrons for Ultrafast Electron diffraction and Microsscopy (MeV-UED/UEM)*. Recent development in MeV-UED [2-3] has enabled broad scientific opportunities in ultrafast material science and chemical dynamics, such as the ripples of monolayer MoS2 and atomic movie of light-induced structural distortion in the perovskites solar cell were captured for the first time by the MeV-UED. Single-shot MeV-UED was successfully employed for the first observation of heterogeneous melting**. In the gas phase UED, real space movie of a nuclear wavepacket passing through conical intersections was sucesffuly recorded ***. To probe and controlling electron motion within a molecule and image bio-molecules in its nature environments, new generation electron scattering instruments with better time resolution, higher sensitivity and real space imaging are needed. SLAC’s strategy for next generation ultrafast electron instrument based on the superconductor RF gun will be discussed.
* X.J. Wang et al, Phys. Rev. E , 54, No.4, R3121 -3124 (1996). ** M. Z. Mo et al, Science 360 1451-1455 (2018). *** J. Yang et al, Science, 361, 64-67. (2018). |
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Slides THXXPLS3 [12.167 MB] | |
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