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Spectroscopy

Spectroscopy

New attosecond X-ray spectroscopy technique ‘freezes’ atomic nuclei in place

13 Mar 2024 Isabelle Dumé
Image showing a purple streak and a green streak colliding with a water molecule, represented by a red ball for oxygen and smaller white balls for hydrogen. A gold flash representing an electron is also present
Scientists used a synchronized attosecond X-ray pulse pair (pictured purple and green here) from an X-ray free electron laser to study the energetic response of electrons (gold) in liquid water on the attosecond time scale, while the hydrogen (white) and oxygen (red) atoms are “frozen” in time. (Courtesy: Nathan Johnson | Pacific Northwest National Laboratory)
Scientists can now follow the movement of electrons and the ionization of molecules in real time tha

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Isabelle Dumé is a contributing editor to Physics World
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