Based on calculations using the laser frequency, the researchers found that the helium nucleus' charge radius is 1.6782 femtometers. Measurements made by bouncing electrons off the nucleus ...

Size of helium nucleus measured more precisely than ever before. Paul Scherrer Institute. Journal Nature DOI 10.1038/s41586-021-03183-1 ...

With this, the international research collaboration succeeded in determining the size of the helium nucleus around five times more precisely than was possible in previous measurements. The group is ...

Technically, any moderately sized, negatively charged particle could be put in orbit around a helium nucleus, provided it can be slowed down enough—the researchers specifically mention ...

An international team of researchers has established that the radius of the helium nucleus is 1.67824 femtometers – or 1.67824×10-15 meters (5.506×10-15 feet). To give you a comparison, if the ...

After an intense game of cat and mouse with different particles, atomic physicists have measured the radius of the helium nucleus five times more precisely than before. Christopher Intagliata reports.

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter ...

The word magic is not often used in the context of science. But in the early 1930s, scientists discovered that some atomic ...

Uranium decay series. When U-238 decays into Th-234 (upper left), it liberates an alpha particle, which is a helium nucleus. The particle quickly picks up two electrons, creating a new atom of helium.

Helium-8 has four extra neutrons that form a “skin” around a helium-4 core. Physicists believe that these neutrons could form a closed sub-shell. This would make helium-8 a doubly-closed-shell nucleus ...

To obtain this information, Williams and colleagues studied a reaction in which radioactive strontium-94 absorbs an alpha particle (a helium nucleus), then emits a neutron and transforms into ...

Jan 28, 2021: Size of helium nucleus measured more precisely than ever before (Nanowerk News) In experiments at the Paul Scherrer Institute PSI, an international research collaboration has measured ...