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Brightest laser blows up water in cinematic and scientific first

By Ben Gruber

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By Ben Gruber

(Reuters) - Scientists have recorded the first ever microscopic movies of water being vaporized by the world's brightest X-ray laser.

Aside from creating a series of mesmerizing videos, the data gathered at the Department of Energy's SLAC National Accelerator Laboratory, in Menlo Park, California, could shed new light on X-ray lasers, and how these extremely bright, fast flashes of light take atomic-level snapshots of some of nature's speediest processes.

"It could also help us find new ways of using explosions caused by X-rays to trigger changes in samples and study matter under extreme conditions," says Claudiu Stan of Stanford PULSE Institute, a joint institute of Stanford University and SLAC.

"These studies could help us better understand a wide range of phenomena in X-ray science and other applications."

The team injected water into the path of the laser as a series of individual drops, as well as a continuous jet. As each individual X-ray pulse hit the water, a single image was recorded, timed from five billionths of a second to one ten-thousandth of a second after the pulse. These images were then strung together to create the movies.

Liquids are commonly used to put scientific samples into the path of an X-ray beam for analysis. The experiments show in detail how the explosive interaction unfolds and provides clues as to how it could affect X-ray laser experiments.

The study was published this week in the journal Nature Physics.

(Reporting by Leela de Kretser; Editing by Chris Reese)