For the helium-4 nucleus, theorists had until recently perceived the alpha particle as an autonomous and independent system within which nucleons simply move away from each other when the nucleus ...

The key to helium’s strangeness is that it is normally a boson: a helium-4 atom consists of two protons, two neutrons, and two electrons, which sums to an even number, ...

Neutral helium microscopy and atom optics constitute an innovative imaging paradigm that exploits low-energy, charge-neutral helium atoms to non-destructively investigate surface properties at the ...

The atom is then smashed with another proton to make a helium-3 atom. When a second helium-3 atom collides with the first helium-3 atom, two protons wander off on their own, and the remnants of ...

Helium is the simplest multi-body atom. Its energy levels can be calculated with extremely high precision only relying on a few fundamental physical constants and the quantum electrodynamics (QED ...

Only about one helium-3 atom exists for every million helium-4 atoms, Horton said. The team measured about 10 million helium-3 atoms per gram of olivine crystals.

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 ...

Only about one helium-3 atom exists for every million helium-4 atoms, Horton said. The team measured about 10 million helium-3 atoms per gram of olivine crystals.