This illustration shows snapshots of the light-triggered transition of the ring-shaped 1,3-cyclohexadiene (CHD) molecule (background) to its stretched-out 1,3,5-hexatriene (HT) form (foreground). The snapshots were taken with SLAC’s high-speed “electron camera” – an instrument for ultrafast electron diffraction (UED).
Greg Stewart/SLAC National Accelerator Laboratory
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Catching up to Electrons on the Move
In photosystem II, the water-splitting center cycles through four stable states
