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Sujet de stage / Master 2 Internship

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Study of radiation-induced defects in touch screen glasses for the screening applications of populations in radiological emergency

Contact: OLLIER Nadège, , nadege.ollier@polytechnique.edu, +33 1 69 33 45 18
Summary:
During a large scale radiological emergency, methods to identify among the population those who have been exposed and require immediate care are needed. There is no operational method to date. The glasses of the touch screens of smartphones keep "in memory" the trace of an irradiation with ionizing radiation, by the formation of "radiation-induced" defects. The measurement and quantification of these defects, in particular by electron paramagnetic resonance spectroscopy, makes it possible to estimate the dose deposited in the glass and thus to estimate the exposure associated with the irradiation.
Possibility of continuation in PhD: Oui
Deadline for application:26/04/2019

Full description:
The nature of the local defects within the glass and their properties are not yet established. During this internship , it will be using various spectroscopic techniques (Electron spin resonance (ESR), Photoluminescence (PL) and Thermoluminescence (TL) ) in collaboration with the IRSN Institute (F. Trompier), to identify the signature of the main point defects produced under gamma radiation. Then their stability, thermal relaxation and UV sensitivity will be studied. Synthetic glasses close to the "Gorilla" type of glass will be manufactured to understand the of formation and stabilization processes of radiation-induced defects.
Technics/methods used during the internship:
Methods, techniques used during the internship : Electron spin resonance (ESR) and phototoluminescence.

Laboratory
Tutor of the internship

 

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