Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Jefferson Lab laser twinkles in rare color

22.12.2010
December is a time for twinkling lights, and scientists at the Department of Energy's Thomas Jefferson National Accelerator Facility are delivering. They've just produced a long-sought, rare color of laser light 100 times brighter than that generated anywhere else.

The light was produced by Jefferson Lab's Free-Electron Laser facility. The laser delivered vacuum ultraviolet light in the form of 10 eV photons (a wavelength of 124 nanometers). This color of light is called vacuum ultraviolet because it is absorbed by molecules in the air, requiring its use in a vacuum.

"We have succeeded in delivering 10 eV photons for the first time," says George Neil, Jefferson Lab associate director for the FEL Division. "Using a hole out-coupling mirror on the Jefferson Lab Ultraviolet Demonstration FEL, we delivered vacuum ultraviolet harmonic light to a calibrated VUV photodiode and measured five nanojoules of fully coherent light in each micropulse."

The feat opens the door to many lines of research that were previously inaccessible.

For instance, the FEL may soon enable a method of determining the age of materials that far outstrips carbon dating. Radio-carbon dating allows scientists to estimate the age of some materials up to roughly 62,000 years. But radio-krypton dating could potentially allow scientists to determine the age of materials between 100,000 to 1 million years. The 10 eV light from the FEL would be used to produce so-called metastable krypton atoms for use in this dating method. The method can contribute to ocean circulation models and maps of groundwater movement, as well as dating polar ice.

"This new laser is also a perfect tool to study novel materials with great potential for addressing issues such as energy and the environment," said Gwyn Williams, FEL basic research program manager.

"We still have a lot of work ahead of us before experiments can begin," Williams said. "In the new year, we'll be working to deliver light into a lab for measurement and future experiments. We hope to accomplish those goals by March."

The Free-Electron Laser program and individual research projects are supported by various organizations. These include the Department of Defense's Office of Naval Research, the Air Force Research Laboratory and the Joint Technology Office, the Commonwealth of Virginia and the Department of Energy's Basic Energy Sciences. Key equipment was provided by the Wisconsin Synchrotron Radiation Center and Cornell University.

Kandice Carter | EurekAlert!
Further information:
http://www.jlab.org

More articles from Process Engineering:

nachricht Dresdner scientists print tomorrow’s world
08.02.2017 | Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS

nachricht New technology for mass-production of complex molded composite components
23.01.2017 | Evonik Industries AG

All articles from Process Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Inactivate vaccines faster and more effectively using electron beams

23.03.2017 | Life Sciences

New study maps space dust in 3-D

23.03.2017 | Physics and Astronomy

Tracing aromatic molecules in the early universe

23.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>