written by Wolfgang Christian, Trisha Salagaram, and Nithaya Chetty

The Microcanonical Entropy model considers an isolated system consisting of N identical, non-interacting quantum particles energy E.  We wish to determine the entropy of the system S(N,E).
 
For fixed total energy E, we consider a system of N distinguishable particles to be composed of a subsystem of (N ? 1) particles and a subsystem of 1 particle. The system comprising N particles with energy E. (1,E?) are the degeneracies of the single particle levels with energy E? less than or equal to E. The number of microstates is used to compute entropy when N is small and a recursive algorithm is used to construct the entropy when N is large.  The model displays the entropy S(N,E) and the computation time as users vary the number of particles N and the total energy E.

The Microcanonical Entropy model was developed by Wolfgang Christian, Trisha Salagaram, and Nithaya Chetty using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking the  ejs_stp_MicrocanonicalEntropy.jar file will run the program if Java is installed.

• Download ejs_stp_MicrocanonicalEntropy.jar - 1967kb Java Archive File

Last Modified June 10, 2014

This file has previous versions.

The source code zip archive contains an EJS-XML representation of the Microcanonical Entropy Model.   Unzip this archive in your EJS workspace to compile and run this model using EJS.

• Download ejs_stp_MicrocanonicalEntropy.zip - 376kb Compressed File

Last Modified August 8, 2011