Now, researchers have created and interrogated a novel kind of helium atom in which one of the electrons is replaced by a sub-atomic particle known as a pion. The work could shed light on the nature ...

For example, a helium atom has an atomic mass of 4, but an atomic number (or positive charge) of 2. Since electrons have almost no mass, it seemed that something besides the protons in the nucleus ...

Its atomic nucleus has two protons and two neutrons (hence the 4 after the abbreviation for the element); in helium-3, one of the neutrons is missing.

Limits of atomic nuclei predicted Scientists simulate large region of the chart of nuclides Date: January 13, 2021 Source: Technische Universitat Darmstadt Summary: Novel calculations have enabled ...

Plasma behaviour in the divertor region is critically influenced by the atomic and molecular processes that are the subject of this CRP; in turn, the operation of a fusion reactor demands successful ...

Helium, with an atomic weight of four, fits into the neutral position between hydrogen and lithium. Argon, with an atomic weight of about forty, as naturally falls into the neutral position ...

Novel calculations have enabled the study of nearly 700 isotopes between helium and iron, showing which nuclei can exist and which cannot. In an article published in Physical Review Letters ...