To the Edge of Melting

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To time-stamp the arrival of each x-ray pulse researchers use an electro-optic crystal (green) placed next to the electron beam (white) in the linear accelerator just before the beam produces x-rays. A laser (red) probes changes in the crystal to mea ...
To time-stamp the arrival of each x-ray pulse, researchers use an electro-optic crystal (green) placed next to the electron beam (white) in the linear accelerator just before the beam produces x-rays. A laser (red) probes changes in the crystal to measure the exact time the beam passed by. This image was created by Jean Charles Castagna, SLAC.

Picking a relatively simple system, SLAC scientists and their collaborators used advanced tools to see the very first instants of change in a solid brought to the edge of melting. Their results appear in the February 2 issue of Science.


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