Carbon doped yttrium aluminum garnet (YAG:C)—A new phosphor for radiation dosimetry

Photoluminescence and Thermoluminescence of the Oxygen-Deficient YAG, YAP, and YAM Phosphors

“…3) and is caused evidently by Tb 3+ ions present in the studied material as an uncontrolled impurity satellite to yttrium. It should be mentioned that the same emission of Tb 3+ was observed in TL emission of YAG:C studied in [1]. Beside the Tb 3+ emission, the oxygen-deficient YAG samples demonstrate a broad emission band peaked at 380 nm and having a long-wave tail stretching up to 650 nm, that is excited mainly in the band at 250 nm and minor bands at 290 and 305 nm.…”

“…Application potential of the carbon-doped Y 3 Al 5 O 12 (YAG:C) for radiation dosimetry using the thermoluminescence (TL) or the optically stimulated luminescence (OSL) techniques has been shown recently [1]. In particular, the OSL sensitivity of the non-optimized YAG:C to β-radiation ( 90 Sr/ 90 Y, 10 mGy) was found to be about 0.1 of the commercial α-Al 2 O 3 :C (Landauer Inc., USA).…”

A new luminescent material based on CaB6O10:Pb to detect radiation

“…Reference [2] discusses some early studies on this topic in detail and includes halides (KCl, KBr, NaCl, RbI, CaF 2 , and BaFX with X = Br, Cl, I), sulfates (MgSO 4 and CaSO 4 ), sulfides (AS, with S = Mg, Sr, Ca, and Ba), and oxides (BeO and fused quartz). Except for BeO [7][8][9], these materials have not yet been adopted in dosimetry because they possess one or more undesirable features such as fading, low sensitivity to radiation, high effective atomic number, or even self-dose [10][11][12][13]. But even BeO has disadvantages: it is toxic in the powder form, so it must be used in the single ceramic form [14].…”

“…Several authors have reported on the dosimetric properties of new OSL materials [11][12][13]15]. However, none of these new materials display the same sensitivity to ionizing radiation as commercial Al 2 O 3 :C. Nevertheless, Al 2 O 3 :C luminescence is not optimum for applications in neutron dosimetry and dose mapping.…”

Thermoluminescence studies of γ-irradiated ZnO:Mg2+ nanoparticles

“…It is observed that, TL intensity increases linearly up to 1 kGy and thereafter decreases. The increase in TL intensity may be due to creation of defects centers such as F-centers and hole centers and decrease in TL intensity might be attributed to overlapping of ionized zones [24]. Further with increase of gamma dose, the glow peaks are well structured and temperature maxima of TL glows are shifted towards higher temperature side.…”