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Showing 1–9 of 9 results
Advanced filters: Author: S. P. Hau-Riege Clear advanced filters

  • A modern version of Newton's 'dusty 'mirror' experiment is made, whereby X-ray pulses are focused on a thin membrane with polystyrene particles placed in front of an X-ray mirror. After a pulse traverses through the sample, triggering the explosion of a particle, it is reflected back on to the sample by the mirror to probe this reaction. The resulting diffraction pattern contains accurate time and spatially resolved information about the exploding particles.

    • Henry N. Chapman
    • Stefan P. Hau-Riege
    • Janos Hajdu
    Research
    Nature
    Volume: 448, P: 676-679

  • The electrical conductivity is critical to understand warm dense matter, but the accurate measurement is extremely challenging. Here the authors use multi-cycle THz pulses to measure the conductivity of gold foils strongly heated by free-electron laser, determining the individual contributions of electron-electron and electron-ion scattering.

    • Z. Chen
    • C. B. Curry
    • S. H. Glenzer
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • X-ray-induced explosions in water drops, examined using time-resolved imaging, show interacting high-speed liquid and vapour flows. This type of X-ray absorption dynamics is predictable and may be used for inducing particular dynamical liquid states.

    • Claudiu A. Stan
    • Despina Milathianaki
    • Sébastien Boutet
    Research
    Nature Physics
    Volume: 12, P: 966-971

  • The start-up of the new femtosecond hard X-ray laser facility in Stanford, the Linac Coherent Light Source, has brought high expectations for a new era for biological imaging. The intense, ultrashort X-ray pulses allow diffraction imaging of small structures before radiation damage occurs. This new capability is tested for the problem of structure determination from nanocrystals of macromolecules that cannot be grown in large crystals. Over three million diffraction patterns were collected from a stream of nanocrystals of the membrane protein complex photosystem I, which allowed the assembly of a three-dimensional data set for this protein, and proves the concept of this imaging technique.

    • Henry N. Chapman
    • Petra Fromme
    • John C. H. Spence
    Research
    Nature
    Volume: 470, P: 73-77

  • The start-up of the new femtosecond hard X-ray laser facility in Stanford, the Linac Coherent Light Source, has brought high expectations for a new era for biological imaging. The intense, ultrashort X-ray pulses allow diffraction imaging of small structures before radiation damage occurs. This new capability is tested for the problem of imaging a non-crystalline biological sample. Images of mimivirus are obtained, the largest known virus with a total diameter of about 0.75 micrometres, by injecting a beam of cooled mimivirus particles into the X-ray beam. The measurements indicate no damage during imaging and prove the concept of this imaging technique.

    • M. Marvin Seibert
    • Tomas Ekeberg
    • Janos Hajdu
    Research
    Nature
    Volume: 470, P: 78-81

  • Femtosecond X-ray pulses were used to obtain diffraction data on photosystem II, revealing conformational changes as the complex transitions from the dark S1 state to the double-pumped S3 state; the time-resolved serial femtosecond crystallography technique enables structural determination of protein conformations that are highly prone to traditional radiation damage.

    • Christopher Kupitz
    • Shibom Basu
    • Petra Fromme
    Research
    Nature
    Volume: 513, P: 261-265