Thermoluminescent composites of sintered synthetic-topaz/ corundum for dosimetry by a novel reversible process.

Topaz (AlF(OH)SiO)/corundum (AlO) composites were prepared by a facile and novel reversible process from the sintering of synthetic topaz and AlF powders, with corundum formed into the topaz matrix. The corundum formation reaction occurs in the temperature range 875-975 °C, from 40 min sintering time, obtaining the topaz- AlF(OH)SiO/corundum- AlO composites. Although sintering temperature and time increment lead to higher corundum formation in the topaz matrix (78.

Synthesis, RL and OSL characterization of thulium doped NaMgF neighborite.

The aim of this work is to study the dosimetric properties of tissue-equivalent thulium doped NaMgF neighborites and to determine their possible application as dosimeters in personal dosimetry. In this aspect, radioluminescence (RL) and optically stimulated luminescence (OSL) dosimetric properties of undoped and Tm -doped NaMgF have been investigated for the first time. Samples were synthesized by solid state reaction and by considering a stoichiometric mixture of pure NaF and MgF reagents.

Optically stimulated luminescence dosimetry performance of novel MgO-La(OH) phosphors.

The aim of this work was to study the optically stimulated luminescence (OSL) properties of novel MgO co-doped with different lanthanides and lithium ions as well as to evaluate the feasibility of using the mentioned phosphors as OSL dosimeters. In this context, the OSL efficiency corresponding to different stimulation wavelengths and different filters was analyzed for all the samples. The properties of the most efficient material, namely, MgO-La(OH), were further studied.

OSL properties of KMgF:Tm for dosimetric applications as OSL dosimeter.

The optically stimulated luminescence (OSL) properties of undoped and Tm-doped KMgF fluoroperovskite have been investigated for the first time. KMgF compounds were synthesized by solid state reaction method and two different procedures were employed to improve the contact among the reagents, namely, the compressed powder was put either in an alumina crucible or in a platinum foil. The maximum OSL emission was found in samples prepared in an alumina crucible and doped with 0.