1. Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor Zn(BO2)2:Tb
- Author
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Li, J., Zhang, C.X., Tang, Q., Zhang, Y.L., Hao, J.Q., Su, Q., and Wang, S.B.
- Subjects
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PHOTOLUMINESCENCE , *THERMOLUMINESCENCE dosimetry , *PHOSPHORS , *TERBIUM - Abstract
Abstract: Polycrystalline powder samples of terbium doped Zn(BO2)2 phosphors were prepared by solid state reaction in the thermal carbon reducing atmosphere at high temperature. The photoluminescence (PL), three-dimensional (3D) TL emission spectrum and dosimetric characteristics following 60Co gamma-rays irradiation were studied. Characteristic emission bands of Tb3+ at about 490, 543, 584 and 620nm, attributed to the 5D4→7F J (J=3, 4, 5, 6) transitions of Tb3+ ions, were observed in the TL and PL emission spectrum. No emission from Tb4+ ions was observed in the TL emission spectrum. The TL-dose response of the powder samples Zn(BO2)2:Tb to 60Co gamma-rays radiation in the dose range from 1 to 100Gy for clinical dose levels was almost linear. The experiment results showed that Zn(BO2)2:Tb has potential use as the materials of gamma-rays thermoluminescence dosimeter (TLD) for clinical dosimetry. [Copyright &y& Elsevier]
- Published
- 2007
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