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  • Experiments performed in the CERN CLOUD chamber show that, under upper-tropospheric conditions, new atmospheric particle formation may be initiated by the reaction of hydroxyl radicals with isoprene emitted by rainforests.

    • Jiali Shen
    • Douglas M. Russell
    • Xu-Cheng He
    ResearchOpen Access
    Nature
    Volume: 636, P: 115-123

  • 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