Scientists in Germany and the USA report a method for measuring pulsed electron paramagnetic resonance (EPR) spectra using a free-electron laser as a radiation source in their Physical Chemistry Chemical Physics (PCCP) article. The high power afforded by the laser enables EPR experiments to be carried out at 240GHz, which significantly enhances the sensitivity of the technique.
The authors of the study have solved the problem of random phase shifts of the free-electron pulse using retrospective data processing, and are able to control phases between pulses, enabling two-pulse experiments that are fundamental to EPR.
Read about this exciting development today:
Phase cycling with a 240 GHz, free electron laser-powered electron paramagnetic resonance spectrometer
Devin T Edwards, Yun Zhang, Steffen J Glaser, Songi Han and Mark Sherwin
DOI: 10.1039/C3CP44492A
