Photoluminescence of gamma-, proton- and alpha-irradiated LiF detectors

• Authors: Barbara Marczewska , Paweł Bilski , Ewa Mandowska , Arkadiusz Mandowski
• Languages of publication: EN

Abstracts

EN

Lithium fluoride (LiF), one of the most pervasive alkali halides in optical device research, is routinely used in optical data storage and radiation protection. LiF crystals may contain different aggregate defects produced by several types of ionizing radiation, with the number of defects being proportional to the cumulative radiation dose. Stimulation of irradiated LiF detectors by heating or with blue light causes thermoluminescence (TL) or photoluminescence (PL), respectively. We developed a new PL reader equipped with a blue light-emitting diode for stimulation and a Hamamatsu photomultiplier for registering green emissions, dedicated to examining LiF detectors as well as more broadly investigating TL/PL emission from standard LiF detectors irradiated with gamma rays, 60 MeV protons and alpha particles. The results confirmed very high efficiency PL signal from alpha-irradiated LiF detectors corresponding to their low efficiency after gamma irradiation, and vice versa for TL readout. Combining the TL and PL readouts permits us to discriminate between how different kinds of radiation affect efficiency in LiF detectors.

Keywords

EN

LiF   photoluminescence   thermoluminescence   dosemeters  

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 4
• Pages: 1009-1012

Dates

published

1 - 8 - 2012

online

17 - 7 - 2012

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Identifiers

DOI

10.2478/s11534-012-0022-2