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Terahertz pulse imaging for tree-ring analysis: a preliminary study for dendrochronology applications

J B Jackson1,4,5, M Mourou1, J Labaune4, J F Whitaker1, I N Duling III2, S L Williamson2, C Lavier3, M Menu3 and G A Mourou4

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Time-domain terahertz reflection imaging is presented as a novel method of measuring otherwise inaccessible tree rings in wooden cultural heritage for the purpose of tree-ring crossdating. Axial and lateral two-dimensional terahertz images of obscured ring patterns are statistically validated with respect to their corresponding optical photographs via adapted dendrochronological methods. Results are compared to similar analysis of x-ray images of a wood specimen.


PACS

91.80.+d Geochronology

91.10.Lh Photogrammetry

Subjects

Environmental and Earth science

Dates

Issue 7 (July 2009)

Received 9 December 2008, in final form 21 April 2009

Published 10 June 2009



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