What is beta decay?
It is a type of nuclear decay of course.
Beta-decay is a type of decay that releases beta particles. There are two types of beta-decay, hence two types of beta particles. The basic one without involving antimatter is beta-minus decay.
During beta-minus decay, an atom converts one of its neutrons into a proton, while releasing an antineutrino
The general equation is:
The other type is beta-plus decay, and involves antimatter. During beta-plus decay, an atom converts one of its protons into a neutron, while releasing a neutrino
The equation is then: