Thermoluminescence Emission, Excitation and Stimulation Spectra of CaSO4:Dy and CaSO4:Tm

On some fundamental features of optically stimulated luminescence measurements

“…The aim of this experiment was to obtain the OSL stimulation spectrum. The reports about some similar experiments can be found in literature (Bulur and Göksu, 1998;Mittani et al, 2008;Douguchi et al, 1999;Lewandowski et al, 1996) but the information given about the experimental procedure is not enough in order to be sure that the order of these experiments was the same.…”

“…So, not without a reason, results of such experiment are rather rarely presented in the literature (e.g. Bailiff, 1993;Bailiff and Barnett, 1994;Bøtter-Jensen et al, 1994;Godfrey-Smith and Cada, 1996;Lewandowski et al, 1996;Barnett and Bailiff, 1997;Bulur and Göksu, 1998;Trinkler et al, 1999;Douguchi et al, 1999;Mittani et al, 2008). There are some various ways of its realization.…”

Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor KSr4(BO3)3:Ce

“…For the three samples in the sequence of the activator Tb 3+ , Tm 3+ and Ce 3+ , the peak temperatures of P L are situated at about 139, 146 and 137 • C, and those of P H at 270, 308 and 246 • C, respectively. By the similarity of the peak shape and the glow-peak temperature of the three samples, we considered that the dopants have not altered the basic nature of the traps already existing in the host matrix, however, different rare earths result in different luminescence efficiency [22][23][24]. It is obvious Fig.…”

The optically stimulated luminescence (OSL) properties of LiF:Mg,TI, Li2B4O7:CU, CaSO4:Tm, and CaF2:MN thermoluminescent (TL) materials

“…4, was approximately a factor of 40 less than that of α-Al 2 O 3 :C, it is probable that this OSL sensitivity would be significantly greater with the proper selection of excitation source, detection filter and PMT, not to mention use of a pulsed OSL (POSL) regime, since the primary emission wavelength of CaSO 4 :Tm is centered at 455 nm and it is a lower-output emission centered at 360 nm (Lewandowski et al, 1996;McKeever et al, 1995) that the test equipment most likely picked up. Furthermore, previous investigations have demonstrated that the most effective excitation wavelength for the primary emission at 455 nm is in the region of 355-370 nm, which is well away from the 470 nm LED wavelength (Lewandowski et al, 1996). In summary, it appears that the ideal OSL experimental setup for this material would effectively reverse the excitation and emission wavelengths of this OSL reader.…”

“…In the case of Li 2 B 4 O 7 :Cu and CaSO 4 :Tm, in spite of their use in commercially-available dosemeters, and the presence of substantial published TL data (Takenaga et al, 1983;Driscoll et al, 1983;Samei et al, 1994;Sunta et al, 1994;Kearfott et al, 1995Kearfott et al, , 2000Simpkins and Kearfott, 1997;Lee et al, 2008;Nambi et al, 1974;Lewandowski et al, 1996;Lakshmanan et al, 2005;Yamashita et al, 1971;Harvey et al, 2010Harvey et al, , 2011Harvey and Kearfott, 2011a, 2011b, 2012, little published research exists documenting their OSL properties. However, CaSO 4 :Tm has been shown to produce a signal using photo-transferred thermoluminescence techniques (PTTL) techniques (Lakshmanan et al, 2005).…”