Radioactivity Flashcards
1
Q
Half Life
A
The time taken for the mass of a radioactive isotope to decrease to half the initial mass
2
Q
Activity
A
The number of nuclei of a radioactive isotope that disintegrate per second
3
Q
Intensity of Radiation
A
The radiation energy per second passing normally through unit area
4
Q
Decay Constant
A
The probability of an individual nucleus decaying per second