J
Jia Liu
Researcher at European XFEL
Publications - 37
Citations - 596
Jia Liu is an academic researcher from European XFEL. The author has contributed to research in topics: Free-electron laser & Laser. The author has an hindex of 9, co-authored 35 publications receiving 415 citations.
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Journal ArticleDOI
Attosecond time–energy structure of X-ray free-electron laser pulses
Nick Hartmann,Nick Hartmann,Nick Hartmann,Gregor Hartmann,Gregor Hartmann,Rupert Heider,Martin S. Wagner,Markus Ilchen,Markus Ilchen,Jens Buck,Jens Buck,Anders Lindahl,Anders Lindahl,Craig Benko,Jan Grünert,Jacek Krzywinski,Jia Liu,Alberto Lutman,Agostino Marinelli,T. Maxwell,A. Miahnahri,Stefan Moeller,Marc Planas,Joseph Robinson,Andrey K. Kazansky,Andrey K. Kazansky,Andrey K. Kazansky,Nikolay M. Kabachnik,Nikolay M. Kabachnik,Jens Viefhaus,Thomas Feurer,Reinhard Kienberger,Reinhard Kienberger,Ryan Coffee,Wolfram Helml,Wolfram Helml,Wolfram Helml +36 more
TL;DR: In this article, the time-energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons.
Journal Article
Microstructure and Residual Stress of Alumina Scale Formed on Ti2AlC at High Temperature in Air
Jai Won Byeon,Jia Liu,M. Hopkins,W. Fischer,K. B. Park,Michael P. Brady,Miladin Radovic,Yongho Sohn +7 more
TL;DR: In this paper, isothermal oxidation at 1000 XC, 1200 XC and 1400 XC for up to 25 hours, as well as 1,000 1-hour cyclic oxidation at 1200 xC were performed in air to examine the oxidation behavior of Ti2AlC.
Journal ArticleDOI
Accurate prediction of X-ray pulse properties from a free-electron laser using machine learning
Alvaro Sanchez-Gonzalez,P. Micaelli,C. Olivier,T. Barillot,Markus Ilchen,Markus Ilchen,Alberto Lutman,Agostino Marinelli,T. Maxwell,A. Achner,Marcus Agåker,Nora Berrah,Christoph Bostedt,Christoph Bostedt,John D. Bozek,Jens Buck,Philip H. Bucksbaum,Philip H. Bucksbaum,S. Carron Montero,S. Carron Montero,B. D. Cooper,James P. Cryan,Minjie Dong,Raimund Feifel,Leszek J. Frasinski,Hironobu Fukuzawa,Andreas Galler,Gregor Hartmann,Gregor Hartmann,Nils Hartmann,Wolfram Helml,Wolfram Helml,Allan S. Johnson,André Knie,Anders Lindahl,Anders Lindahl,Jia Liu,K. Motomura,Melanie Mucke,Caroline O'Grady,Jan-Erik Rubensson,E. R. Simpson,Richard J. Squibb,Conny Såthe,Kiyoshi Ueda,Morgane Vacher,Morgane Vacher,D. J. Walke,Vitali Zhaunerchyk,Ryan Coffee,Jonathan P. Marangos +50 more
TL;DR: Employing a machine learning strategy, one can accurately predict X-ray properties for every shot using only parameters that are easily recorded at high-repetition rate, by training a model on a small set of fully diagnosed pulses.
Journal ArticleDOI
High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters
Pavle Juranić,Andrey L. Stepanov,Rasmus Ischebeck,Volker Schlott,Claude Pradervand,L. Patthey,Milan Radovic,I. Gorgisyan,Leonid Rivkin,Christoph P. Hauri,B. Monoszlai,R. Ivanov,Peter Peier,Jia Liu,Tadashi Togashi,S. Owada,Kanade Ogawa,Tetsuo Katayama,Makina Yabashi,Rafael Abela +19 more
TL;DR: This manuscript presents the latest device to meet this challenge, a THz streak camera using Xe gas clusters, capable of pulse arrival time measurements with an estimated accuracy of several femtoseconds.
Journal ArticleDOI
Operation of X-ray gas monitors at the European XFEL
Theophilos Maltezopoulos,Florian Dietrich,Wolfgang Freund,U. Jastrow,Andreas Koch,Joakim Laksman,Jia Liu,Marc Planas,Andrey A. Sorokin,Kai Tiedtke,Jan Grünert +10 more
TL;DR: Pulse energy measurements at 0.134 nm wavelength are presented, exceeding 1 mJ obtained with an absolute measurement uncertainty of 7-10%; correlations between different XGMs are shown, from which a SASE1 beamline transmission of 97% is deduced.