An international research team led by the Paul Scherrer Institute PSI has measured the radius of the nucleus of muonic helium ...

Helium atom precision measurements and calculations have a history of nearly a century. In the 1960s, theorists discovered that the fine-structure split (23P0-23P2) of the 23P energy level of ...

In a feat of modern-day alchemy, atom tinkerers have fooled hydrogen atoms into accepting a helium atom as one of their own. The camouflaged atom behaves chemically like hydrogen, but has four ...

In a world first, researchers have recorded exactly how solvents interact with dissolved materials, one atom at a time. After a solute, such as salt, dissolves in a solvent, such as water, the two ...

Researchers have now created a new type of artificial atom in which a helium nucleus is orbited not by an electron but by a pion. Helium is not just for party balloons. It is the second lightest ...

Physicists have created the first-ever atomic vortex beam — a swirling tornado of atoms and molecules with mysterious properties that have yet to be understood. By sending a straight beam of ...