AVS 58th Annual International Symposium and Exhibition
    Actinides and Rare Earths Focus Topic Thursday Sessions
       Session AC+TF-ThA

Paper AC+TF-ThA9
Radiation-Induced Degradation of Photoluminescence in YAG:Ce

Thursday, November 3, 2011, 4:40 pm, Room 207

Session: The Structure, Properties and Chemistry of Thin Films of Actinides and Rare Earths
Presenter: Sarah Gollub, Vanderbilt University
Authors: S.G. Gollub, Vanderbilt University
D.G. Walker, Vanderbilt University
S.L. Weeden-Wright, Vanderbilt University
Correspondent: Click to Email
Thermographic phosphors are ceramic based materials whose photoluminescence is temperature dependent. We fabricated the phosphor YAG:Ce to determine its sensitivity and selectivity to various radiation environments. In particular we investigated the effects of non-ionizing radiation on the photluminescent spectra. No change to the spectrum was observed after exposure to 1 MRad of x-ray radiation. Because x-rays are typically ionizing, we did not expect to see any significant degradation. When the material was bombarded with protons, which are know to cause displacement damage in many materials, a degradation was observed. Results of damage cross section and stopping power were commensurate with predicted values using SRIM. Results are shown as a function of proton energy and dose.