Activity of Radioactive Substance

The activity of a radioactive substance is a measure of the radioactivity of a substance, expressed by the number of decays of its nuclei per unit time. The activity of a radioactive substance is measured in special units such as curies, microcuries and millicuries.

The activity of a radioactive substance is taken into account in various fields. For example, when choosing a radiopharmaceutical, it is important to know the activity of the radioactive isotope that it contains. This allows you to select the optimal radiation dose for diagnosis or treatment.

Also, the activity of a radioactive substance is taken into account when assessing the danger of working with it. The higher the activity, the more precautions must be taken to keep personnel safe. Standards for working with radioactive materials are strictly regulated depending on their activity.

Thus, knowledge of the activity of a radioactive substance is extremely important for its practical use in medicine, science and industry. This ensures the safety and efficiency of working with radioactive materials.

Probability of formation and decay are probabilistic events. But they have a clear cyclicity in time - the probability of a specific nuclear decay in a certain volume decreases over a period of time, and at the same time, but over a different time, the probability of the occurrence of the same nuclear decays increases. Therefore, for nuclear physics it is important to know two quantities: single - the number of decays in a given period of time per unit volume, γ, and total - the number of decays N in a certain time interval t accepted for calculations. For any radioactive element, the average duration