Faculty Advisor

Cyganski, David


It is shown that experimentally observed non-Poisson fluctuations in the decay rate of ?C are the result of electrical interactions of - particles with plastic scintillation material. It is also shown that the thermal properties of plastic scintillation materials have a significant effect on measured activity rate. An electrical model is developed for the scintillation material and its interaction with the radioactive source. Based on this model a solution for eliminating these fluctuations is developed and this solution is shown to be successful experimentally. Finally, a thermal model of the scintillator is developed and is shown to be in agreement with experimental data.


Worcester Polytechnic Institute

Date Accepted

January 2001


Electrical Engineering

Project Type

Major Qualifying Project


Restricted-WPI community only

Advisor Department

Electrical and Computer Engineering