The SLAC linear collider in Menlo Park, California has already made a name for itself as one of the world's largest and most prolific particle accelerator facilities dedicated to high energy particle physics. It is now beginning a new life as a source of x-rays a billion times brighter than any other research x-ray source to date. Early results that reveal how molecules respond to intense radiation from the facility's Linac Coherent Light Source (LCLS) are set to be published this week in the journal Physical Review Letters.
The early LCLS research takes advantage of the machine's bright, brief flash to study how x-rays strip electrons from molecules built of pairs of nitrogen atoms. Once the electrons are removed, the nitrogen atoms strongly repel each other, and the molecule rapidly blows apart. But in addition to being very bright, the x-ray pulses from the LCLS can be made extremely brief, which allows researchers to capture data from the molecule before it disintegrates. The result is the x-ray equivalent of a flash bulb that freezes the action in a photograph. Unlike photographic flashes that are thousandths of a second in duration, however, flashes from the LCLS are measured in femtoseconds, which are a millionth of a billionth of a second long.
In some of the first published results to emerge from the LCLS, the researchers report that nitrogen molecules absorb less x-ray radiation when illuminated with shorter flashes compared to longer ones. In addition to helping develop a model for x-ray absorption in molecules, the results show that the LCLS will likely be able to provide snapshots of never-before-seen, ultra-fast chemical and molecular processes, including those involving the biomolecules that are critical components in living cells.
A Synopsis describing the first published results from LCLS is available through the APS Physics website (physics.aps.org).
About APS Physics:
APS Physics (http://physics.aps.org) publishes expert written commentaries and highlights of papers appearing in the journals of the American Physical Society.
James Riordon | EurekAlert!
Squeezing light at the nanoscale
18.06.2018 | Harvard John A. Paulson School of Engineering and Applied Sciences
The Fraunhofer IAF is a »Landmark in the Land of Ideas«
15.06.2018 | Fraunhofer-Institut für Angewandte Festkörperphysik IAF
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
18.06.2018 | Earth Sciences
18.06.2018 | Process Engineering
18.06.2018 | Life Sciences