Thermoluminescent response and relative efficiency of TLD-100 exposed to low-energy x-rays.
The dose-response of LiF:Mg,Ti (TLD-100) exposed to 15 and 35 kVp (8.0 +/- 0.1 and 8.1 +/- 0.1 keV effective energy respectively) x-rays and 60Co gamma-rays has been measured in the dose interval from (1.2-5.4) x 10(3) Gy for x-rays, and from 0.14 to 850 Gy for gamma-rays. In both cases the total TL signal and glow curve peaks 3 to 9 show supralinearity. The supralinearity function f(D) is similar for both x-ray beams, except for peak 8, where a 30% difference is observed. The maxima of f(D) for the total TL signal and peaks 5 to 8 are 2.1, 1.7, 6.4, 3.3 and 7.5 respectively for 8.1 keV x-rays and 3.7, 3.1, 13.6, 9.9 and 11.0 for gamma-rays. The measured relative efficiencies for x-rays with respect to 60Co, for the total TL signal and peaks 5 and 7, were 1.04, 0.97 and 3.2 respectively.
Gamboa-deBuen
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Instituto de Ciencias Nucleares, UNAM, México DF, Mexico.
Buenfil
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AE
Ruiz
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CG
Rodríguez-Villafuerte
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M
Flores
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A
Brandan
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ME
D000535:Aluminum; D002138:Calibration; D003037:Cobalt Radioisotopes; D004307:Dose-Response Relationship, Radiation; D005373:Film Dosimetry; D005459:Fluorides; D005720:Gamma Rays; D018020:Lithium Compounds; D008163:Luminescent Measurements; D008274:Magnesium; D009010:Monte Carlo Method; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results; D014025:Titanium; D014965:X-Rays
D003037:Cobalt Radioisotopes; D018020:Lithium Compounds; C027651:lithium fluoride; D000535:Aluminum; D014025:Titanium; D008274:Magnesium; D005459:Fluorides