Femtosecond Diffractive Imaging with a Soft-X-ray Free-Electron Laser
摘要
Theory predicts that with an ultrashort and extremely bright coherent X-ray pulse, a single diffraction pattern may be recorded from a large macromolecule, a virus, or a cell before the sample explodes and turns into a plasma. Here we report the first experimental demonstration of this principle using the FLASH soft X-ray free-electron laser. An intense 25 fs, 4 10^13 W/cm^2 pulse, containing 10^12 photons at 32 nm wavelength, produced a coherent diffraction pattern from a nano-structured non-periodic object, before destroying it at 60,000 K. A novel X-ray camera assured single photon detection sensitivity by filtering out parasitic scattering and plasma radiation. The reconstructed image, obtained directly from the coherent pattern by phase retrieval through oversampling, shows no measurable damage, and extends to diffraction-limited resolution. A three-dimensional data set may be assembled from such images when copies of a reproducible sample are exposed to the beam one by one.
引用
@article{arxiv.physics/0610044,
title = {Femtosecond Diffractive Imaging with a Soft-X-ray Free-Electron Laser},
author = {Henry N. Chapman and Anton Barty and Michael J. Bogan and Sebastien Boutet and Matthias Frank and Stefan P. Hau-Riege and Stefano Marchesini and Bruce W. Woods and Sasa Bajt and W. Henry Benner and Richard A. London and Elke Plonjes and Marion Kuhlmann and Rolf Treusch and Stefan Dusterer and Thomas Tschentscher and Jochen R. Schneider and Eberhard Spiller and Thomas Moller and Christoph Bostedt and Matthias Hoener and David A. Shapiro and Keith O. Hodgson and David van der Spoel and Florian Burmeister and Magnus Bergh and Carl Caleman and Gosta Huldt and M. Marvin Seibert and Filipe R. N. C. Maia and Richard W. Lee and Abraham Szoke and Nicusor Timneanu and Janos Hajdu},
journal= {arXiv preprint arXiv:physics/0610044},
year = {2007}
}
备注
revtex, 6 pages, 4 figures