The “proton radius puzzle” has been reinforced by a precise measurement of an atomic transition in muonic deuterium, which suggests the radius of the deuterium nucleus is much smaller than expected.

Scientists, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen. Scientists from the Max Planck ...

The International Atomic Energy Agency called a potential hydrogen bomb test a clear violation of U.N. Security Council resolutions and “deeply regrettable." ...

The proton, discovered 100 years ago 1, is an essential building block of visible matter. The nucleus of a hydrogen atom consists of a single proton, making this atom a suitable platform for ...

Seven years after the end of WWII, the US detonated the world's first hydrogen bomb. H-bombs use a combination of nuclear fission and fusion and are far more powerful than atomic bombs. Edward ...