American Institute of Physics Conference Proceedings Series
Floyd D. McDaniel & Barney L. Doyle
We report on measurements of Radiation Induced Conductivity (RIC) of thin film Low Density Polyethylene (LDPE) samples. RIC occurs when incident ionizing radiation deposits energy in a material and excites electrons into conduction states. RIC is calculated as the difference in sample conductivity under an incident flux and “dark current” conductivity under no incident radiation.
The primary focus of this study is the temperature dependence of the steady state RIC over a wide range of absorbed dose rates, from cryogenic temperatures to well above room temperature. The measured RIC values are compared to theoretical predictions of dose rate and temperature dependence based on photoconductivity models developed for localized trap states in disordered semiconductors. We also investigated the variation of RIC as a function of material, applied electric field, and incident beam energy parameters.
Dennison, JR; Corbridge Gillespie, Jodie; Hodges, Joshua; Hoffman, Ryan C.; Abott, J; Hart, Steven; and Hunt, Alan W., "Temperature Dependence of Radiation Induced Conductivity in Insulators" (2009). Journal Articles. Paper 41.