Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

Record number 562323
Title Underestimation of equivalent dose in single-aliquot optical dating of feldspars caused by preheating
Author(s) Wallinga, Jakob; Murray, Andrew; Duller, Geoff
Source Radiation Measurements 32 (2000)5. - ISSN 1350-4487 - p. 691 - 695.
Event Proceedings of the 9th International Conference on Luminescence and Electron-Spin Resonance Dating (LED99), Rome, Italy, 1999-09-06/1999-09-10
DOI https://doi.org/10.1016/S1350-4487(00)00127-X
Publication type Refereed Article in a scientific journal
Publication year 2000
Abstract

The ability of single-aliquot techniques to recover a known laboratory dose in coarse-grain potassium-rich feldspar separates is tested. It is shown that, for the samples under study, single-aliquot methods underestimate the known dose. It is deduced that this phenomenon is caused by an increase in electron trapping probability as a consequence of heating. The same phenomenon would lead to an underestimation in the equivalent dose in a natural sample. Multiple-aliquot techniques for equivalent dose determination may not suffer from this problem, but are not suitable for samples that might not have been completely bleached at the time of deposition. It is argued that testing for changes in electron trapping probability should become routine practice in the single-aliquot dating of feldspar.

Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.