Radioactive decay, also known as nuclear decay or radioactivity, is the spontaneous breakdown of a radioactive nucleus into a lighter nucleus. Early studies of radioactivity indicated that three different kinds of radiation were emitted, symbolized by the first three letters of the Greek alphabet namely Alpha, Beta, and Gamma [1]. One example of a radioactive material is a radioactive nuclide called radionuclide. These materials are used for labelling conpounds which are then used to as sources of radiation in imaging. The fate of these radionuclide in reactive products is determined by following (counting) the emitted radiation [2].

In this exercise, the simulation of decay of a radionuclide was implemented. The number of the decayed radionuclides (paper/coins) was counted. And the behavior of the graph of the coins/paper strips on the behavior of a mass of decaying radionuclide was then related.


References:
[1] http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch23/modes.php
[2] http://www.chemicool.com/definition/radionuclide.html