Thermoluminscence characteristics and dosimetric parameters of Nd⁺³ doped alkali borosilicate glass

Abstract

Alkali‐borosilicate glass samples doped with 0.04‐0.7 mol % of neodymium oxide (20SiO2‐(50‐x) H3BO3‐20Na2CO3‐10ZnO‐xNd2O3) have been prepared by the melt quenching method. Thermoluminescence (TL) properties such as: dose–response, thermal fading, minimum detectable dose, and reproducibility of the gamma irradiated samples were investigated. Kinetic and trapping parameters such as trap depth, kinetic order, and frequency factor were studied by using the glow curve shape, initial rise and computerized glow curve de‐convolution (GCDC) methods. Among the studied concentrations, the obtained results showed that alkali‐borosilicate glass doped with 0.15 mol % neodymium oxide is the most sensitive one. This glass composition has a good linear TL gamma dose–response over a wide dose range of 0.5‐1000 Gy, as well as low fading and excellent reproducibility. These obtained features recommend the new prepared glass for many radiation detection applications.

Thermoluminescence characteristics of lithium borosilicate glass doped with Sm2O3

“…The dosimetric properties of borate glass with different activators have been studied extensively. [ 4–8 ] These activators or impurities play an important role in the creation of electron–hole traps. Adding silica to the borate glass stimulates them to generate nonbridging oxygen hole centres (NBOHCs) after irradiation with high electromagnetic radiation energy such as X‐rays, gamma rays, or ultraviolet radiation.…”

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

“…The colors of the symbols, with which the appropriate dopants from the lanthanide group are marked, correspond to the luminescence emission colors. [48,[114][115][116][117][118][119][120][121][122][123]134,140,141].…”

“…The characteristic parameters of thermal fading for different glass systems doped with rare-earth elements are presented in Table 2. [48,[114][115][116][117][118][119][120][121][122][123]134,140,141].…”

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

“…As the signal emitted from an irradiated TLD was almost similar to that of the background signal, therefore determination of either the threshold dose that could be detected or the minimum detection dose (MDD) was very important. The MDD can be determined using the following formula (eqn 1) [ 29 ] : where B* is the average background TL response of five annealed, but nonirradiated, dosimeters, σ B is the corresponding standard deviation, and F is the calibration factor at the low dose range [Gy/TL response unit (nC/g)]. The calibration factor F equalled 0.74 Gy g nC −1 and 0.09 Gy g nC −1 for nonsensitized and sensitized rhyolite, respectively.…”