Spectroscopic data on alkali-atom dimers residing on the surface of liquid helium nanodroplets have revealed that they are detected primarily in the weakly bound, metastable, spin-triplet state. Here, ...

Scientists have created an ultrashort electron beam with five times more peak current than any other similar beam on Earth.

(Courtesy: Jacqueline Ramseyer Orrell/SLAC National Accelerator Laboratory) Researchers at the SLAC National Accelerator Laboratory in the US have produced the world’s most powerful ultrashort ...