Effect of gamma irradiation on some optical properties of sodium tetraborate glasses containing iron

• Published in: Journal of non-crystalline solids 1988, Vol.104 (1), p.31-37
• Main Authors: Kutub, A.A., Elmanharawy, M.S.
• Format: Article
• Language: English
• Subjects: Applied sciences; Building materials. Ceramics. Glasses; Chemical industry and chemicals; Exact sciences and technology; Glasses; Structure, analysis, properties
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/0022-3093(88)90177-9

A series of glass samples were prepared from admixtures of Na 2B 4O 7 and Fe 2O 3. The prepared glasses were irradiated for 12 h and 24 h using a gamma-ray dose rate of 206.4 Gy h −1 The optical absorption spectra were recorded for unirradiated and irradiated glass samples. It is found that gamma irradiation shifts the optical absorption edges towards longer wavelengths and introduces a new absorption band at 550 nm for the iron-free Na 2B 4O 7 glass. This induced band disappears on doping with Fe 2O 3 at high concentration. The doping of Na 2B 4O 7 with Fe 2O 3 produces the iron characteristics band at 440 nm which increases in intensity when gamma-irradiated. Thermoluminescence of irradiated Na 2B 4O 7 shows two peaks around 393 K and 550 K and a linear dose-response over the dose range of 100 to 500 Gy which offers a possibility for use as a radiation dosemeter.