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Sharp X-ray pulses from the atomic nucleus

X-rays make the invisible visible: they permit the way materials are structured to be determined all the way down to the level of individual atoms. In the 1950s it was x-rays which revealed the double-helix structure of DNA. With new x-ray sources, such as the XFEL free-electron laser in Hamburg, it is even possible to "film" chemical reactions. The results obtained from studies using these new x-ray sources may be about to become even more precise.
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