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

Mass Attenuation Coefficient Measurements of Some Nanocarbon Allotropes: A New Hope for Better Low Cost Less-Cumbersome Radiation Shielding Over A Wide Energy Range

“…However, in the samples with higher terbium concentration (8 mol%) fourth optical absorption bands were observed at: 487, 547, 589 and 620 nm, which were related to the 5 D 4 → 7 F J (J = 3, 4, 5, 6) electronic transitions of the Tb 3+ ion [Çetin et al, 2007]. Following the samples were exposed to gamma radiation from 60 Co at 3 and 6 kGy doses and not apparent change in the optical absorption was observed, i.e., absent bands associated to the color centers and to the Tb 4+ ion, in this last case the finding is in agreements to those found by others authors [Li et al, 2007]. Radio-Opticallyand Thermally Stimulated Luminescence of Zn(BO2)2:Tb3+ exposed to Ionizing Radiation…”

“…However, the thuliumdoped zinc tetraborate showed a TL intensity peak at ~300 °C and it was more higher than that of LiF:Mg,Ti dosimeter [Annalakshmi et al, 2014]. In the case of Zn(BO 2 ) 2 borate doped with terbium, the photoluminescence emission bands (490, 543, 584 and 620 nm) were ascribed to Tb 3+ impurity when the borate were excited with wavelength 261 nm [Li et al, 2007]. It is well known that an important property of some phosphors is the radioluminescence (RL) [Santiago et al, 1998;Krbetschek & Trautmann, 2000], and in our Tb 3+ doped zinc borate is present too.…”

“…The thermoluminescence (TL) and photoluminescence properties, using various alkaline earth ions (Li, Ca, Mg, Ba, Sr, Zn) based on tetraborate and various dopants, have been analyzed [Schulman et al, 1967;Takenaga et al, 1980;Sabharwal & Sangeeta, 1998;Furetta et al, 1999;Santiago et al, 2001;Li et al, 2007;Cruz-Zaragoza et al, 2016;Cedillo Del Rosario et al, 2017]. Important features of borate material such as near soft tissue, high TL sensitivity and its good performances for gamma, beta and neutron dosimetry have been the base for enhancement of this TL phosphor [Kazanskaya et al, 1974;Prokic, 1980;Li et al, 2008].…”

Dosimetric Properties of Dysprosium Doped Zinc Borate Phosphors

“…Ayrıca ışıma pik şiddetleri ve pik sıcaklıklarının, Dykonsantrasyon miktarına bağlı olduğu bulunmuştur. Dy-konsantrasyon söndürme etkisi nedeniyle TL şiddeti, önce Dy-konsantrasyon miktarının artmasıyla azalır, daha sonra optimum konsantrasyon seviyesinde maksimum değere ulaşır, sonra tekrar düşer ve daha sonra Dykonsantrasyonunun artmasıyla hafifçe artar (Li et al 2007). Diğer yandan ana ışıma pikinin pik sıcaklığı, Dy-konsantrasyon seviyesinin artmasıyla hafifçe kayar.…”

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

“…The group of Manam studied the TL of un-doped, Cu and Mn doped K 2 B 4 O 7 compounds under X-ray and evaluated their kinetic parameters [9]. Recently, our group reported the TL properties of several borates systems doped with rare earth ions [10][11][12][13][14][15].…”