Photo and X-ray luminescence characteristics of CeF3 -doped SiO2 + B2O3 +AlF3 + NaF + CaF2 scintillating glasses. (November 2022)

• Record Type: Journal Article
• Authors: Meejitpaisan, P.; Doddoji, Ramachari; Kothan, S.; Kaewkhao, J.
• Is Part Of: Radiation measurements. Volume 158(2022)
• Publication Date: 2022-11
• Subjects: CeF3-Doped fluoroborosilicate glasses -- FTIR -- Photoluminescence -- ET mechanism -- Decay curves -- X-ray excited luminescence; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2022.106853
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: Fluoroborosilicate (SBFanc :SiO2 + B2 O3 +AlF3 + NaF + CaF2 ) glasses with different CeF3 concentrations were fabricated by melt quenching technique to examine the scintillation properties of these glasses. The density and refractive index increase with an increase in CeF3 concentration. The structural properties of glasses were studied in the range of 800–4000 cm −1 using FT-IR transmittance spectroscopy. Luminescence characteristics of Ce 3+ :SBFanc glasses with an intensity peak around ∼345 nm (5d→4f) were studied using photo (λexc = 303 nm) and X-ray excited luminescence techniques. The energy transfer (ET) between Ce 3+ -Ce 3+ ion pairs taking place via dipole-dipole type interaction for the concentration quenching of Ce 3+ emission on the basis of Dexter and Schulman theory. The PL decay curves can be fitted by a double exponential function with the decay times 64.28–99.87 ns and 15.78–21.29 ns for slow and fast decay components, respectively. The highest integrated light emission intensity of Ce 3+ :SBFanc glasses stimulated by X-ray is 35% of commercial Bi4 Ge3 O12 crystal and can be used for the scintillator materials. Highlights: The transmittance spectra of glasses were measured in UV, Visible and mid-IR region. Concentration quenching of Ce 3+ emission is analyzed by the Dexter-Schulman theory. PL, X-ray excited luminescence and decay curves of glasses were investigated. The X-ray intensity of SBFanc Ce0.30 glass is about 35% of that of a commercial BGO.