A team of physicists at the Physikalisches Institut, Ruprecht-Karls-Universität working with colleagues from Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, has developed a laser technique to selectively remove the most energetic ions from a sample, cooling those that remain.
Click here for original story, Using laser-based evaporative cooling to chill negatively charged molecules
Source: Phys.org