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Time resolved luminescence of quartz from Nigeria by F.O. Ogundare; M.L. Chithambo is a Materials Science article available to read on EtoBox.
What is Time resolved luminescence of quartz from Nigeria about?
Characteristics of luminescence lifetimes and luminescence intensity obtained from time resolved spectra of quartz from Nigeria are presented. The luminescence was pulse-stimulated at 11 ls width at 470 nm. Samples used consisted of unannealed quartz as well as samples annealed at 500 °C, 600 °C, 700 °C, 800 °C and 900 °C. The luminescence lifetimes and luminescence intensities were studied as a function of annealing temperature, irradiation dose and measurement temperature. It was found that there is a decrease, although non-monotonic, in the luminescence lifetime with change in annealing temperature from 20 to 900 °C. In addition, lifetimes extracted from time resolved spectra of unannealed samples as well as ones annealed at 500 °C and 600 °C are initially independent of irradiation dose but do later decrease with further irradiation. Regarding the luminescence intensity it was observed that in general, the intensity passes through a peak as the measurement temperature is increased from 20 to 200 °C with slight differences in the detailed pattern dependent on preheating. Activation energies for thermal quenching and thermal assistance evaluated from temperature-dependent changes
Who reads Time resolved luminescence of quartz from Nigeria?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- F.O. Ogundare; M.L. Chithambo
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0925-3467)
- Published
- 2007
- Language
- EN
- Field
- Materials Science (Physical Sciences)