These light pulses with different wavelengths, whose time separation can be adjusted with attosecond accuracy, are very powerful tools to investigate the structure of matter and the dynamics of ultrafast physical processes and chemical reactions.
A team working at the SACLA X-ray Free-Electron Laser in Japan has succeeded in generating ultra-bright, two-color X-ray laser pulses, for the first time in the hard X-ray region. These light pulses with different wavelengths, whose time separation can be adjusted with attosecond accuracy, are very powerful tools to investigate the structure of matter and the dynamics of ultrafast physical processes and chemical reactions.
SACLA is one of only two facilities in the world to offer XFEL as light source to investigate matter, with various applications in biology, chemistry, physics and materials science. XFELs have the capacity to deliver radiation ten billion times brighter and with pulses one thousand times shorter than existing synchrotron X-ray radiation sources. Until now, XFELs have normally emitted one radiation pulse at a single wavelength like conventional visible lasers.
The Japanese team led by Toru Hara of the RIKEN SPring-8 Center, reports today in the journal Nature Communications that they have succeeded in creating double X-ray pulses with tunable wavelengths that can be relatively separated by more than 30%. This was achieved using variable-gap undulators, that act as a radiator and whose resonant wavelength can be largely varied by changing the magnetic field strength.
"This will enable us to elucidate X-ray-induced ultrafast transitions of electronic states and structures, which will significantly contribute to the advancement of ultrafast chemistry, plasma physics and astrophysics, and X-ray quantum optics," conclude the authors.
For more information please contact:
About the SPring-8 Center
The RIKEN SPring-8 Center (RSC) was established in 2005 as a photon science research complex to enhance the distinctive capabilities of X-ray science. RSC is now the only research entity in the world offering both an X-ray free electron laser (SACLA) and a Synchrotron Radiation facility (SPring-8), at the same location.
In 2012, with the opening of SACLA, RIKEN became the second institution in the world to offer X-ray Free Electron Laser (XFEL) for research. The facility boasts the shortest wavelength in the world (0.6 nm), an extremely broad wavelength range and a very high peak output of 100 GW. This unique X-ray laser enables researchers to peer deeper inside matter and investigate unexplored areas of research.
Juliette Savin | EurekAlert!
Harder 3D-printed tools – Researchers from Dresden introduce new process for hardmetal industry
11.10.2018 | Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Flying High with VCSEL Heating
04.10.2018 | Fraunhofer-Institut für Lasertechnik ILT
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
20.11.2018 | Life Sciences
20.11.2018 | Life Sciences
20.11.2018 | Physics and Astronomy