Bonn 2020 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 1: Radiation monitoring and dosimetry I
ST 1.2: Vortrag
Dienstag, 31. März 2020, 11:15–11:30, H-HS II
Studies of emission spectra of various thermoluminescence materials — •Evelin Derugin1, Florian Mentzel1, Jens Weingarten1, Jörg Walbersloh2, and Kevin Kröninger1 — 1TU Dortmund, Lehrstuhl für Experimentelle Physik IV — 2Materialprüfungsamt NRW
The individual monitoring service at the Materialprüfungsamt NRW develops the thermoluminescence(TL) dosemeter system TL-DOS
for large scale individual dose monitoring in cooperation with the Lehrstuhl für Experimentelle Physik IV at the TU Dortmund
University. When a TL material
is exposed to ionizing radiation it stores the deposited energy by trapping excited electrons in metastable states. When heated, the material releases
the trapped electrons depending on their energy difference to the next band. These electrons can recombine with holes and vice versa, leading
to an emission of light. The intensity of the emitted light is proportional to the amount of initially deposited energy.
In the course of the improvement of the readout method in order to optimize TL light sensitive filters, it is important
not only to make a statement about the glow curve, but also to consider the emission spectrum of the emitted TL light.
In the context of a master thesis different TL materials, which are currently used as detector material are examined for
their emission spectra after irradiation.
The study provides information about the intensity distribution as a function of the wavelength of the light.
The talk will discuss the different emission spectra of the TL materials.