APS Excellence in Physics Education Award
November 2019
Science SPORE Prize
November 2011
The Open Source Physics Project is supported by NSF DUE-0442581.
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Two State Nuclear Decay Model Documents
This material has 2 associated documents. Select a document title to view a document's information.
Main Document
written by
Wolfgang Christian
The Two State Nuclear Decay model simulates the radioactive decay of atomic nuclei into other nuclei. In this model, the resultant nuclei are stable and there are no intermediate decay states. Although the decay of a radioactive nucleus (radionuclide) is spontaneous and the time of its decay cannot be predicted, the probability of its decay k is constant and is usually known. The model displays a radioactive sample with N nuclides. Radioactive nuclides are color-coded red and decayed nuclides are color-coded blue. Users can set the number of nuclides N, the decay constant k, and the time interval between measurements before the simulation is run. The simulation counts the number of decay events and stops when there are no radionuclides remaining.
The Two State Nuclear Decay model was developed using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_nuclear_TwoStateNuclearDecay.jar file will run the program if Java is installed.
Last Modified June 13, 2014
 This file has previous versions.
Source Code Documents
The source code zip archive contains an XML representation of the Two State Nuclear Decay Source model. Unzip this archive in your EJS workspace to compile and run this model using EJS.
Last Modified June 13, 2014
This file has previous versions.
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Two State Nuclear Decay Model
