Influence of 1.25 MeV gamma rays on optical and luminescent features of Er 3+ doped zinc bismuth borate glasses

Vinod Hegde, Nimitha Prabhu, Akshatha Wagh, M. I. Sayyed, O. Agar, Sudha D. Kamath

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Glasses based on 10ZnO-5Na 2 CO 3 -10Bi 2 O 3 -(75-x)B 2 O 3 -xEr 2 O 3 with x = (0, 0.1, 0.3, 0.5, 0.7, 1.0) mol%, were synthesized by melt quenching technique and characterized through optical and luminescent features, before and after irradiating them with high energy (1.25 MeV) gamma rays. The amorphous nature of the glasses and the presence of various structural groups like BiO 6 , BO 3 and BO 4 were confirmed through XRD and FTIR measurements. Optical properties were studied through UV–VIS–NIR absorption spectra. Decrease in band gap values after gamma irradiation confirmed the creation of color centers in the glass matrix. Thermally stimulated Luminescence (TL) and Optically Stimulated Luminescence (OSL) spectroscopy techniques were used to study the trap centers induced after irradiation. The number of peaks and their trapping parameters were assessed using the Computerized Glow Curve Deconvolution (CGCD). The linearity in dose response proves their suitability in usage for dosimeter and shields in radiation zones within the dose.

Original languageEnglish
Pages (from-to)1762-1769
Number of pages8
JournalResults in Physics
Volume12
DOIs
Publication statusPublished - 01-03-2019

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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