Speculations on the blue and red bands in the TL emission spectrum of albite and microcline

Y. Kirsh, P. D. Townsend

Research output: Contribution to journalArticlepeer-review


TL spectra of the feldspars albite (NaAlSi3O8) and microcline (KAlSi3O8) were recorded following X-irradiation at room temperature, and presented as isometric and contour plots. Bands at about 425 and 450 nm in both samples are ascribed to electron-hole recombinations in two types of hole centres. An intense band at the red can be attributed either to the excitation of Fe3+ ions by the blue emission, or to valence state conversion of the iron. The kinetic analysis of the glow curves enabled us to interpret the experimental results in terms of a discrete set of traps, and to suggest a model for some of the recombination centres. The analysis of the contour plots implies that at least part of red emission is independent of the blue band.

Original languageEnglish
Pages (from-to)43-49
Number of pages7
JournalInternational Journal of Radiation Applications and Instrumentation. Part
Issue number1-2
StatePublished - 1988
Externally publishedYes


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