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Photoluminescence and thermoluminescence properties of Li2O-Na2O-B2O3 glass

Razak, N. A. and Hashim, S. and Mhareb, M. H. A. and Tamchek, N. (2016) Photoluminescence and thermoluminescence properties of Li2O-Na2O-B2O3 glass. Luminescence, 31 (3). pp. 754-759. ISSN 1522-7235

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Abstract

Influence of Nd3+ concentration on the optical and thermoluminescence (TL) properties of melt-annealed synthesized 10 Na2O: 20 Li2O: (70-x) B2O3: xNd2O3, where 0.1≤ x ≤0.7 (LNB) glasses are determined. The absence of sharp peaks in X-ray diffraction patterns confirms the amorphous nature of the prepared glasses. The photoluminescence spectra under 800 nm laser excitations at room temperature exhibit three prominent peaks centred at 538, 603 and 675 nm corresponding to the transitions of 4G7/2 → 4I9/2, [4G7/2 → 4I11/2, 4G5/2 → 4I9/2] and [4G7/2→ 4I13/2, 4G5/2 → 4I11/2], respectively. The TL glow curve exhibits a prominent peak (Tm) at 180°C. The best performance of the prepared glass was found at 0.5 mol% of Nd2O3. We achieved a good linearity of TL response against dose between 0.5 to 4.0 Gy. The calculated value of the effective atomic number, Zeff, is 7.55 which is nearly tissue equivalent (Zeff = 7.42). These promising features demonstrate the capability of the aforementioned glass to be used as a radiation dosimeter.

Item Type:Article
Uncontrolled Keywords:boron, glass, lithium, oxygen, sodium, chemistry, luminescence, photochemistry, temperature, Boron, Glass, Lithium, Luminescence, Oxygen, Photochemical Processes, Sodium, Temperature
Subjects:Q Science > QC Physics
Divisions:Science
ID Code:72584
Deposited By: Haliza Zainal
Deposited On:27 Nov 2017 12:55
Last Modified:27 Nov 2017 12:55

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