Electronic pas de deux: Physicists in Heidelberg have filmed the pulsing motion of the electron pair in a helium atom. At 15.3 femtoseconds (fs) the two electrons are close to the nucleus (centre of ...

This allowed them to account for the behaviours of the emitted electron and impacting proton in the electric field of the helium nucleus, and how the position of the nucleus is distorted in turn.

Entangled electrons Illustration depicting an atom (green nucleus with a white electron cloud) that is hit by a laser pulse (red). One electron is ripped out of the atom (black sphere on the right) ...

Laser physicists have captured an atomic-level event – an electron being ejected from a helium atom after being struck by a photon – with an accuracy of a trillionth of a billionth of a second ...

The Science For the first time, and contrary to popular belief, scientists measured the vibrational structure of hydrogen and helium atoms by X-rays.

How to fake super-heavy hydrogen 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 ...

An electron makes its escape It's like catching light in action. For the first time, physicists have measured changes in an atom to the level of zeptoseconds, or trillionths of a billionth of a ...

Scientists have decoded the electronic structure of water, opening up new perspectives for technological and environmental applications.

Helium is the simplest element in the periodic table with more than one particle in its nucleus, yet state of the art theory and experiments on it don't add up.

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.