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@unpublished{li:napac2019-tuyba1, author = {S. Li}, title = {{Generation and Characterization of Attosecond Pulses From X-Ray Free-Electron Laser}}, booktitle = {Proc. NAPAC'19}, language = {english}, intype = {presented at the}, series = {North American Particle Accelerator Conference}, number = {4}, venue = {Lansing, MI, USA}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {oct}, year = {2019}, note = {presented at NAPAC2019 in Lansing, MI, USA, unpublished}, abstract = {In this talk I will discuss the production and application of sub-femtosecond x-ray pulses recently generated at LCLS. I will focus on angular streaking as the measurement technique to resolve the extremely short x-ray pulses. This method exploits phase dependent energy modulation of a photoelectron ionized in the presence of a strong laser field with circular polarization. I will present experimental results of single shot images and preliminary analysis results. Specifically I will discuss two applications of this technique: streaking of the Auger electrons and measuring the shape resonance directly in the time domain.}, }