Scientists Create ‘Diamond Rain’
Researchers study the exotic precipitation at x-ray laser
2017/08/22 by Markus Roth / feu
In cooperation with teams at the TU Darmstadt and in the USA, scientists at the Helmholtz Centre Dresden-Rossendorf (HZDR) have been able to confirm that “diamond precipitation” develops inside the ice giants of our solar system.
Using ultra-strength X-ray lasers and other facilities of the in California, they simulated conditions like those inside the cosmic giants. This enabled the researchers to observe, for the first time, the splitting of hydrocarbon and the conversion of carbon into diamonds. Their findings have been published in the Stanford Linear Accelerator Center (SLAC). journal “Nature Astronomy”(DOI: 10.1038/s41550-017-0219)
The recent result of the is one further highlight of the research that physicists of the TU Darmstadt have started many years ago closely collaborating with international partners, says team around Dr. Dominik Kraus (HZDR). The use of the X-ray laser at the Markus Roth, Professor at TU Darmstadt (Institute for Nuclear Physics) allowed for the investigation of planetary core conditions on an atomic scale. The experiments lead by Dr. Kraus are the culmination of efforts that started with the PhD thesis of Alexander Pelka (now at FEL in Hamburg) on the generation of liquid carbon (experiments at the VULCAN Laser, Rutherford Appleton Laboratory) and with the PhD thesis of Dominik Kraus at TU Darmstadt. In his thesis he has looked into phase transitions of carbon at Megabar pressures using intense laser and x-ray radiation. Stanford Linear Coherent Light Source (LCLS)
“The team of scientists and students of the TU Darmstadt is proud to be a long term partner of this successful collaboration”, says Professor Roth. Next year the University will be adding a PhD student to the LCLS in Stanford to continue our research. In the future the Darmstadt scientists will also use the XFEL in Hamburg as well as the upcoming Extreme LIGHT Infrastructure (ELI) laser systems in Europe and the to explore the compositions of distant worlds. Facility for Antiproton and Ion Research in Europe (FAIR) in Darmstadt