Yefanov Oleksandr, Oberthür Dominik, Bean Richard, Wiedorn Max O, Knoska Juraj, Pena Gisel, Awel Salah, Gumprecht Lars, Domaracky Martin, Sarrou Iosifina, Lourdu Xavier P, Metz Markus, Bajt Saša, Mariani Valerio, Gevorkov Yaroslav, White Thomas A, Tolstikova Aleksandra, Villanueva-Perez Pablo, Seuring Carolin, Aplin Steve, Estillore Armando D, Küpper Jochen, Klyuev Alexander, Kuhn Manuela, Laurus Torsten, Graafsma Heinz, Monteiro Diana C F, Trebbin Martin, Maia Filipe R N C, Cruz-Mazo Francisco, Gañán-Calvo Alfonso M, Heymann Michael, Darmanin Connie, Abbey Brian, Schmidt Marius, Fromme Petra, Giewekemeyer Klaus, Sikorski Marcin, Graceffa Rita, Vagovic Patrik, Kluyver Thomas, Bergemann Martin, Fangohr Hans, Sztuk-Dambietz Jolanta, Hauf Steffen, Raab Natascha, Bondar Valerii, Mancuso Adrian P, Chapman Henry, Barty Anton
Center for Free-Electron Laser Science, Deutsches Elektronen Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany.
European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany.
Struct Dyn. 2019 Dec 4;6(6):064702. doi: 10.1063/1.5124387. eCollection 2019 Nov.
The new European X-ray Free-Electron Laser (European XFEL) is the first X-ray free-electron laser capable of delivering intense X-ray pulses with a megahertz interpulse spacing in a wavelength range suitable for atomic resolution structure determination. An outstanding but crucial question is whether the use of a pulse repetition rate nearly four orders of magnitude higher than previously possible results in unwanted structural changes due to either radiation damage or systematic effects on data quality. Here, separate structures from the first and subsequent pulses in the European XFEL pulse train were determined, showing that there is essentially no difference between structures determined from different pulses under currently available operating conditions at the European XFEL.
新型欧洲X射线自由电子激光装置（European XFEL）是首个能够在适合进行原子分辨率结构测定的波长范围内，以兆赫兹级的脉冲间隔提供高强度X射线脉冲的X射线自由电子激光装置。一个突出而关键的问题是，使用比以前高出近四个数量级的脉冲重复率，是否会由于辐射损伤或对数据质量的系统影响而导致不必要的结构变化。在这里，我们确定了European XFEL脉冲序列中首个脉冲和后续脉冲的单独结构，结果表明，在European XFEL目前可用的操作条件下，从不同脉冲确定的结构之间基本上没有差异。
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