Correlated ESR, PL and TL studies on copper activated thermoluminescence dosimetry phosphors

Thermoluminescence, structural and magnetic properties of a Li2O–B2O3–Al2O3 glass system doped with LiF and TiO2

“…0.0002. Similar behavior in borate glass has also been observed by other authors [22][23][24] where the structure of the four dominant resonance lines was attributed to the hyperfine axially symmetric interaction of a center hole with S ¼1/2 and a 11 B nucleus with I¼3/2 where the hole is over the oxygen in the tetrahedral BO 4 configuration [22,25]. The four resonance lines of the LBA+ 50LiF (wt%) sample were more intense than in the LBA sample.…”

Redox reactions in Cu-activated nanocrystalline LiF TLD phosphor

“…These traps may be related to Cu 2+ and during irradiation they may get reduced to traps related to Cu + on capturing an electron (formed during irradiation), get converted to shallow traps similar to that in case of photo-transferred-thermo-luminescence (PTTL) and occupy the levels corresponding to Cu + . This increases the intensity of the first 404 K peak (due to recombination of the traps related to Cu + ) and the intensity of the second 490 K peak (which could be due to the traps related to Cu 2+ ) is found to decrease when TL of the sample was taken for the second time [35,[43][44][45]. This effect could also be seen in the second sample, when the TL readout was taken up to 523 K (as shown in Fig.…”

“…Cu + and Cu + + e À ? Cu 0 ) as PO À 3 could help in LiF:Mg, Cu, P [25,43,44,47]. As the temperature was increased (beyond 523 K), the Cu + ion could change to Cu 2+ (i.e., Cu + ?…”

Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor Zn(BO2)2:Tb

“…On borates, the thermally stimulated luminescence studies were started in 1967 by the work of Schulman et al [3]. Since then, TL glow curves and TL emission characteristics were studied by many authors using the thermoluminescent technique for radiation dosimetry [4][5][6][7][8][9][10][11]. The thermoluminescence studies of borate compounds are of interest because of their near tissue equivalent absorption coefficient [12][13][14], extremely low cost, lower synthesis temperature and relatively easy preparation [15][16][17][18][19][20].…”