Nuclear decay and artificial transmutation

Alpha emission

4/2 a

Beta emission

0/-1 B

Positron emission

0/+1 e

Electron capture

0/-1 e

Gamma ray

0/0

Neutron capture

1/0 n (artificial)

fusion

2 lighter nuclei make a single nucleus (artificial)

Fission

Large nucleus breaks into smaller nuclei, requires critical mass (artificial)