All types of radioactive decay can be detected ... beta radiation is stopped by several metres of air or a thin sheet of aluminium; beta decay:\(_{X}^{A}\textrm{X}\rightarrow_{Z+1}^{ ...

For example, carbon-14 decays to nitrogen-14 when it emits beta radiation ... The graph shows the decay curve for a radioactive substance. The count rate drops from 80 to 40 counts a minute ...