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TY - UNPB AU - Yang, J. AU - Kan, K. AU - Kondoh, T. AU - Tanimura, K. AU - Terunuma, N. AU - Urakawa, J. AU - Yoshida, Y. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Ultrafast Relativistic-Energy Electron Microscopy J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - An ultrafast electron microscopy (UEM) using a relativistic-energy femtosecond-pulse electron beam has being developed at Osaka University. We succeeded to generate a 100-fs-pulse electron beam with energy of 3.1 MeV using a photocathode RF gun. In the demonstrations of UEM, we succeeded to observe the TEM imaging of polystyrene and gold nanoparticles by the accumulating measurement of 3.1-MeV femtosecond electron pulses. The relativistic-energy single-pulse electron imaging is also available under the low-magnification observation, i.e. 300 times. The UEM has also been succeeded for the study of the ultrafast structural dynamics in materials with the single-shot electron diffraction observation. PB - JACoW CP - Geneva, Switzerland ER -