Science Daily  May 20, 2021 It has so far been difficult to gain a more accurate picture of the course of chemical reactions at the atomic level. An international team of researchers (Germany, USA – UC Berkeley, UC San Diego, SLAC National Accelerator Laboratory, France) has shown second harmonic generation on a table-top extreme ultraviolet source. To investigate the surface of titanium sample down to the atomic level they set up a special focusing geometry, consisting of an elliptically shaped mirror to concentrate the laser radiation onto a small area. They focused the radiation with a wavelength of 32.8 nanometres […]