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Comparative study of LiF : Mg,Cu,Na,Si and Li2B4O7 : Cu,Ag,P TL detectors

Miljanić, Saveta; Ranogajec-Komor, Maria; Knežević, Željka; Štuhec, Matjaž; Prokić, Mirjana (2006) Comparative study of LiF : Mg,Cu,Na,Si and Li2B4O7 : Cu,Ag,P TL detectors. Radiation Protection Dosimetry, 119 (1-4). pp. 191-196. ISSN 0144-8420

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Abstract

Recently, two new types of "tissue equivalent" thermoluminescent detectors (TLDs) have aroused attention: LiF:Mg, Cu, Na, Si and Li_2B_4O_7:Cu, Ag, P. In this work the characteristics of both detectors were compared with the characteristics of the well known type LiF:Mg, Ti detector, TLD-100. The following properties were investigated: the glow curve structures, relative sensitivity, batch homogeneity and uniformity, detection threshold, reproducibility of the response, linearity in the wide dose range and fading. Also, the energy dependence for medium and low energy X-rays was determined in the range of mean energies between 33 and 116 keV. The results confirmed "tissue equivalency" of both new types in the investigated range of photon energies. LiF:Mg, Cu, Na, Si detector has very high sensitivity (about 75 times higher than that of TLD-100) and is convenient for use in a very low range of doses. Li_2B_4O_7:Cu, Ag, P detector shows some improvements in comparison with the previously prepared types of lithium borate. The most important is the 5 times higher sensitivity than that of TLD-100. This detector is also very promising, especially in medical dosimetry.

Item Type: Article
Uncontrolled Keywords: TL detectors; LiF:Mg, Cu, Na, Si ; Li_2B_4O_7:Cu, Ag, P
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Chemistry
NATURAL SCIENCES > Interdisciplinary Natural Sciences
NATURAL SCIENCES > Interdisciplinary Natural Sciences > Radiation Science
Divisions: Division of Materials Chemistry
Depositing User: Željka Knežević Medija
Date Deposited: 07 May 2015 14:25
Last Modified: 07 May 2015 14:25
URI: http://fulir.irb.hr/id/eprint/1841
DOI: 10.1093/rpd/nci557

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