UV-induced second readout of LiF thermoluminescent dosimeters in the therapeutic dose range.
A previously developed technique for reading out LiF thermoluminescent dosimeters (TLD) a second and subsequent time by means of ultraviolet (UV)-induced repopulation of dosimetry traps was studied to determine the feasibility of maintaining a second readout capability in a radiotherapy clinical setting. It was found that with grouping of the TLDs according to second readout sensitivity, the UV-induced readout attained a precision comparable to that of the initial readout. However, the UV-induced TL response retained a strong previous dose memory following a standard high-temperature anneal, and routine calibration before each reuse is recommended.
D005459:Fluorides; D008094:Lithium; D018020:Lithium Compounds; D011879:Radiotherapy Dosage; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*; D014466:Ultraviolet Rays
D018020:Lithium Compounds; C027651:lithium fluoride; D008094:Lithium; D005459:Fluorides