Physicists team up to tackle proton radius problem

Ten years ago, just about any nuclear physicist could tell you the approximate size of the proton. But that changed in 2010, when atomic physicists unveiled a new method that promised a more precise measurement. The new quantity ...

Has the magic gone from Calcium-52?

For the first time scientists have measured the radius of a calcium nucleus with 32 neutrons – indicating that nuclear physics theories don't describe atomic nuclei as well as previously thought.

Physicists confirm surprisingly small proton radius

International team of physicists confirms surprisingly small proton radius with laser spectroscopy of exotic hydrogen. The initial results puzzled the world three years ago: the size of the proton (to be precise, its charge ...

End of the magic: Shell model for beryllium isotopes invalidated

A research group led by Professor Dr. Wilfried Nortershäuser has, for the first time, managed to measure the size of the charge distribution in the atomic nucleus of the highly exotic beryllium-12 isotope. The researchers ...