Main dosimetric characteristics of some tissue-equivalent TL detectors.
The aim of this work was to determine important dosimetric characteristics of several types of the most interesting tissue-equivalent thermoluminescent detectors (TLDs). Special attention was given to the determination of energy dependence for medium and low energy X rays. The following types of TLDs were investigated: (a) two new types based on lithium borate: Li2B4O7:Cu,In and Li,B4O7:Cu,In,Ag; (b) two types of the recently developed highly sensitive LiF:Mg,Cu,P material: TLD-700H and GR 200A and (c) two well known types of LiF:Mg,Ti detectors: TLD-100 and TLD-700. In order to determine their photon energy response characteristics, TLDs previously calibrated with 137Cs gamma rays were simultaneously irradiated with X ray beams in the range of effective energies between 33 and 116 keV. Measured energy responses (relative to air), normalised to those to 137Cs photons were compared with calculated data. Although the deviations of the measured data from the 'theoretical' predictions are different for all the investigated TLDs, there is no large difference in 'tissue-equivalency' between them.
Miljanić
S
S
Ruder Bosković Institute, Zagreb, Croatia. saveta@rudjer.irb.hr
Ranogajec-Komor
M
M
Knezević
Z
Z
Vekić
B
B
D001881:Borates / Q000737:chemistry / Q000528:radiation effects; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects; D005720:Gamma Rays; D006358:Hot Temperature; D006801:Humans; D018020:Lithium Compounds / Q000737:chemistry / Q000528:radiation effects; D008163:Luminescent Measurements; D008670:Metals / Q000737:chemistry; D011854:Radiochemistry; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000379:methods* / Q000706:statistics & numerical data; D014965:X-Rays
D001881:Borates; D018020:Lithium Compounds; D008670:Metals; C027651:lithium fluoride; C021051:lithium borate; D005459:Fluorides