Comparative studies on radioluminescent and thermoluminescent spectra of LiF:Mg,Cu,P and LiF:Mg,Cu,Si.
The influence of various annealing treatments on radioluminescent (RL) and thermoluminescent (TL) spectra of LiF:Mg,Cu,Si and LiF:Mg,Cu,P was investigated. The TL and RL emission bands for LiF:Mg,Cu,P are not the same; however, the emission band peaking at ∼383 nm is predominant in the TL and RL emission for LiF:Mg,Cu,Si. With the increase in annealing temperatures in the range of 240-300°C, for LiF:Mg,Cu,P, the intensity of TL decreases much more rapidly than that of RL. For LiF:Mg,Cu,Si, the area ratios of the two bands of RL and TL remain constant within experimental errors. It suggests that there is a significant decrease in the concentration of recombination centres in LiF:Mg,Cu,P after the annealing, in addition to the decrease in trapping centres, the recombination centres for main TL emission and RL emission in LiF:Mg,Cu,Si are the same, and the recombination centres for TL emission and RL emission in LiF:Mg,Cu,P are not the same. P is a more effective dopant than Si.
State Key Laboratory of NBC Protection for Civilian, PO Box 1044, Ext. 201, Beijing 102205, P.R. China Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 204, Beijing 102205, P.R. China kaiyongtang@yahoo.com.
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Tang
Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 204, Beijing 102205, P.R. China.
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Fan
Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 204, Beijing 102205, P.R. China.
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Cui
Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 204, Beijing 102205, P.R. China.
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Zhu
Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 204, Beijing 102205, P.R. China.
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Liu
D003300:Copper / Q000737:chemistry; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D005459:Fluorides / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008274:Magnesium / Q000737:chemistry; D008422:Materials Testing; D010758:Phosphorus / Q000737:chemistry; D011835:Radiation Protection; D011854:Radiochemistry; D012825:Silicon / Q000737:chemistry; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods*
D018020:Lithium Compounds; C027651:lithium fluoride; D010758:Phosphorus; D003300:Copper; D008274:Magnesium; D005459:Fluorides; D012825:Silicon