使用自由电子激光X射线源的相干脉冲二维晶体学。
Coherent-pulse 2D crystallography using a free-electron laser x-ray source.
作者信息
Mancuso A P, Schropp A, Reime B, Stadler L-M, Singer A, Gulden J, Streit-Nierobisch S, Gutt C, Grübel G, Feldhaus J, Staier F, Barth R, Rosenhahn A, Grunze M, Nisius T, Wilhein T, Stickler D, Stillrich H, Frömter R, Oepen H-P, Martins M, Pfau B, Günther C M, Könnecke R, Eisebitt S, Faatz B, Guerassimova N, Honkavaara K, Kocharyan V, Treusch R, Saldin E, Schreiber S, Schneidmiller E A, Yurkov M V, Weckert E, Vartanyants I A
机构信息
Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany.
出版信息
Phys Rev Lett. 2009 Jan 23;102(3):035502. doi: 10.1103/PhysRevLett.102.035502. Epub 2009 Jan 22.
Coherent diffractive imaging for the reconstruction of a two-dimensional (2D) finite crystal structure with a single pulse train of free-electron laser radiation at 7.97 nm wavelength is demonstrated. This measurement shows an advance on traditional coherent imaging techniques by applying it to a periodic structure. It is also significant that this approach paves the way for the imaging of the class of specimens which readily form 2D, but not three-dimensional crystals. We show that the structure is reconstructed to the detected resolution, given an adequate signal-to-noise ratio.
展示了利用波长为7.97 nm的自由电子激光辐射的单个脉冲序列对二维（2D）有限晶体结构进行相干衍射成像。该测量通过将传统相干成像技术应用于周期性结构而取得了进展。同样重要的是，这种方法为易于形成二维而非三维晶体的一类标本的成像铺平了道路。我们表明，在有足够信噪比的情况下，结构能够重建到检测分辨率。
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