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Research Highlights

Published: Fri, 11/03/2017 - 12:45pm

The actors are molecules. The plot, broken molecular bonds. JILA Fellow Ralph Jimenez and a team of detector experts at the National Institute of Standards and Technology (NIST) are working together to make X-ray movies of a molecular drama.

The team at NIST built a microcalorimeter X-ray spectrometer capable of performing time-resolved spectroscopy; in other words: a camera to film molecules. They use this camera to learn how molecules break their bonds – do the ­electrons rearrange, do the other atoms quake?

The microcalorimeter spectrometer is not the only tool that can film molecules, but it is the smallest. Previously, only huge, multibillion dollar synchrotrons were capable of producing X-rays and probing molecules. Beam time at these facilities has to be reserved in advance, sometimes months, or even years. These long wait times, combined with the expense of building and operating synchrotrons, can limit opportunities for new research.

In contrast, NIST’s spectrometer fits on a tabletop and costs a fraction of an entire synchrotron system. But most importantly, NIST’s spectrometer is easily accessible ­­– it’s like having the ability to film a...

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Published: Jul 21, 2017

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Published: Jul 10, 2017

Getting lasers to have a precise single frequency (color) can be trickier than herding cats. So...

Published: Jun 20, 2017

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Published: May 22, 2017

JILA and NIST scientists are hot on the trail of understanding quantum correlations (or...

Published: Apr 21, 2017

The Regal group recently met the challenge of measurements in an extreme situation with a device...

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