Optimisation of the readout parameters when evaluating thermal neutron doses by TL dosimetry with LiF:Mg,Ti.
The location of the glow peaks depends on the heating rate. It takes some time until the crystal reaches the heater temperature, and this time lag has a direct effect on the shift of peaks towards higher temperatures. Some information on the high-temperature peaks may be lost if the readout conditions (mainly length of time) are not properly chosen. Step heating profiles to a varying final temperature between 300 degrees C and 125 degrees C were used to study the time dependence of the collected information in the glow curves of (6)LiF:Mg,Ti crystals, and the minimal heating time for evaluation of thermal neutron doses was determined.
German
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Nuclear Research Center Negev, P.O. Box 9001, 84190 Beer Sheva, Israel. gur118@inter.net.il
Weinstein
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Abraham
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Alfassi
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ZB
D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005459:Fluorides / Q000528:radiation effects*; D018020:Lithium Compounds / Q000528:radiation effects*; D009502:Neutrons; D016273:Occupational Exposure / Q000032:analysis*; D011786:Quality Control; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*
D018020:Lithium Compounds; C027651:lithium fluoride; D005459:Fluorides