Related Experiment Videos
TL emission spectra from differently doped LiF:Mg detectors
E Mandowska1, P Bilski, E Ochab
1Institute of Physics Pedagogical University, Armi Krajowej, Czestochowa, Poland. e.mandowska@wsp.czest.pl
Radiation Protection Dosimetry
|October 18, 2002
Summary
Investigating lithium fluoride (LiF) doped with magnesium (Mg), this study explores how titanium (Ti) and copper (Cu) activators affect thermoluminescent detector properties. A novel LiF:Mg,Cu,Ti material shows promise, combining desirable characteristics of existing detectors.
Area of Science:
- Solid State Physics
- Materials Science
- Luminescence
Background:
- Lithium fluoride (LiF) based thermoluminescent detectors (TLDs) are crucial for radiation dosimetry.
- Standard LiF TLDs include LiF:Mg,Ti and LiF:Mg,Cu,P, with luminescence centers attributed to titanium and phosphorus, respectively.
- Understanding dopant influence on LiF luminescence is key to developing advanced dosimeters.
Purpose of the Study:
- To investigate the impact of dopant composition on the emission spectra of LiF:Mg materials.
- To characterize a novel 'hybrid' LiF:Mg,Cu,Ti thermoluminescent detector.
- To compare the properties of LiF:Mg,Cu,Ti with established LiF:Mg,Ti and LiF:Mg,Cu,P detectors.
Main Methods:
- Synthesis of variously doped LiF:Mg samples, including LiF:Mg,Cu,Ti.
- Emission spectra measurements using a liquid nitrogen-cooled CCD detector and spectrograph.
- Analysis of spectral data including numerical deconvolution of glow curves by wavelength and temperature.
Main Results:
- The LiF:Mg,Cu,Ti material exhibits a glow curve shape similar to LiF:Mg,Cu,P.
- Its sensitivity is comparable to that of LiF:Mg,Ti detectors.
- Preliminary spectral analysis indicates emission characteristics similar to LiF:Mg,Cu,P, with a peak below 400 nm.
Conclusions:
- The LiF:Mg,Cu,Ti material presents a unique combination of properties from established LiF TLDs.
- Dopant choice significantly influences the luminescence characteristics of LiF-based detectors.
- This novel material warrants further investigation for potential applications in radiation dosimetry.