1Deutsches Elektronen-Synchrotron (DESY), Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany 2School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China 3The Hamburg Centre for Ultrafast Imaging,… Click to show full abstract
1Deutsches Elektronen-Synchrotron (DESY), Center for Free-Electron Laser Science, Notkestrasse 85, 22607 Hamburg, Germany 2School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China 3The Hamburg Centre for Ultrafast Imaging, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany 4Physics Department, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany +these authors contributed equally *[email protected]
               
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