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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2010, Volume 61, Issue 3,





Silviu Jipa1, Traian Zaharescu, Wilhelm Kappel, Laura Monica Gorghiu, Calin Oros, Radu Setnescu1, MADALINA GEORGIANA NEDELCU
Thermo-luminescence of Rare Earths Activated Potassium Tetraborate

Abstract:

Potassium tetraborate was synthesized by high-temperature solid state reaction. The influence of rare earths (La, Ce, Nd, Sm, Eu, Gd, Dy, Ho and Yb) as dopants was investigated. Relative thermoluminescence (TL) efficiency for the K2B4O7 activation is given. The TL kinetic parameters were evaluated by employing the peak shape method and the results suggest that activated tetraborate systems obey the intermediate order kinetic (1 [ b [ 2). An attempt was made to explain the thermo-luminescence mechanism according to frequency factor magnitude. The TL dose response is linear ranging from 3 Gy to 6 kGy and there is no indication on response saturation. Keywords: thermo-luminescence, potassium tetraborate, trivalent rare earth ions, trapping parameters


Issue: 2010, Volume 61, Issue 3
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