News tagged with laser pulses

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X-rays capture electron 'dance'

(Phys.org)—The way electrons move within and between molecules, transferring energy as they go, plays an important role in many chemical and biological processes, such as the conversion of sunlight to energy ...

Jan 31, 2013
4.6 / 5 (5) 0 | with audio podcast

Demagnetization by rapid spin transport

The fact that an ultrashort laser pulse is capable of demagnetizing a ferromagnetic layer in a jiffy has been well-known since approximately 1996. What we don't yet understand, however, is how exactly this demagnetization ...

Jan 27, 2013
4.5 / 5 (4) 1 | with audio podcast

X-ray laser takes aim at cosmic mystery

Scientists have used powerful X-rays from the Linac Coherent Light Source (LCLS) at the SLAC National Accelerator Laboratory, to study and measure, in atomic detail, a key process at work in extreme plasmas ...

Dec 12, 2012
5 / 5 (8) 2 | with audio podcast

Steps towards filming atoms dancing

With their ultra short X-ray flashes, free-electron lasers offer the opportunity to film atoms in motion in complicated molecules and in the course of chemical reactions. However, for monitoring this motion, ...

Dec 03, 2012
not rated yet 0

Freezing electrons in flight

(Phys.org)—Using the world's fastest laser pulses, which can freeze the ultrafast motion of electrons and atoms, University of Arizona physicists have caught the action of molecules breaking apart and electrons ...

Oct 15, 2012
5 / 5 (7) 7 | with audio podcast