Cryptotomography: reconstructing 3D Fourier intensities from randomly oriented single-shot diffraction patterns

Details Cryptotomography: reconstructing 3D Fourier intensities from randomly oriented single-shot diffraction patterns Cryptotomography: reconstructing 3D Fourier intensities from randomly oriented single-shot diffraction patterns

2010-03-03

arxiv.org/abs/1003.0846v2

Physics

Optics

4 pages, 4 figures

Scientific paper

We reconstructed the 3D Fourier intensity distribution of mono-disperse prolate nano-particles using single-shot 2D coherent diffraction patterns collected at DESY's FLASH facility when a bright, coherent, ultrafast X-ray pulse intercepted individual particles of random, unmeasured orientations. This first experimental demonstration of cryptotomography extended the Expansion-Maximization-Compression (EMC) framework to accommodate unmeasured fluctuations in photon fluence and loss of data due to saturation or background scatter. This work is an important step towards realizing single-shot diffraction imaging of single biomolecules.

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