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DPG

Bonn 2020 – scientific programme

The DPG Spring Meeting in Bonn had to be cancelled! Read more ...

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ST: Fachverband Strahlen- und Medizinphysik

ST 1: Radiation monitoring and dosimetry I

ST 1.2: Talk

Tuesday, March 31, 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 Kröninger11TU 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.

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