Determining Mechanisms of Nonlinear Photo Response and Transport Properties in Scintillating Materials
EMSL Project ID
26195
Abstract
The objective of this proposed work is to develop fundamental understanding on photo response and charge carrier transport properties in advanced scintillating materials: (1) light output as a function of ion mass, ion energy, electron energy and stopping power; (2) nonlinear response over a wide energy region; (3) changes in emission spectra and decay curves, and the potential contribution of different spectrum components to the nonlinearity; and (4) effects of dopant level and native defect concentrations. The novelties of the proposed work are the single ion/electron excitation, thin film approach and defect characterization, as well as the unique combination of them, so that the light output can be quantitatively studied with additional control and separation of mechanisms over a continuous energy region. The ultimate goal is, taking advantage of the better-understood ion-solid interactions, to understand radiation detection physics, energy partitioning and transport mechanisms in scintillating materials to provide a pathway for accelerated discovery of new materials and a base for optimizing advanced scintillators to meet the challenges of various commercial and research applications.
Project Details
Start Date
2007-04-24
End Date
2010-04-25
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members