After emitting an alpha or beta particle, the nucleus will often ... atomic number and mass number remain the same. All types of radioactive decay can be detected by a Geiger-Muller tube, or ...

They measured quark mixing through superallowed nuclear beta decay, a highly precise and fast type of beta decay where a proton in one nucleus changes into a neutron (or vice versa) without ...

The effects of the weak force were first discovered at the turn of the 20th century, in the place where it is most obviously at work: in radioactive beta decay ... of two types, or “flavours ...