Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 562343
Title The effect of optical absorption on the infrared stimulated luminescence age obtained on coarse-grain feldspar
Author(s) Wallinga, J.; Duller, G.A.T.
Source Quaternary Science Reviews 19 (2000)10. - ISSN 0277-3791 - p. 1035 - 1042.
Publication type Refereed Article in a scientific journal
Publication year 2000

The occurrence and effect of optical absorption of the infrared stimulated luminescence (IRSL) signal and the thermoluminescence (TL) signal from potassium-rich feldspar is investigated for two samples. If optical absorption of the luminescence signal occurs, it is expected that this will cause an age underestimation that will be most severe for coarser grain sizes. Of the two samples under study here, one sample is shown to be affected by optical absorption, whereas the other is not. There is a significant decline in luminescence age with increasing grain size for the sample which exhibits optical absorption, but not for the other sample. However, both samples show a severe IRSL age underestimation for all grain sizes, compared to the age obtained by optical stimulation of quartz from the same samples. We conclude that, although there is an effect of optical absorption on the IRSL age, there must be additional reasons for the underestimation of the IRSL age. (C) 2000 Elsevier Science Ltd.

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