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J Photochem Photobiol B. 2012 Jul 2;112:43-7. doi: 10.1016/j.jphotobiol.2012.04.006. Epub 2012 Apr 20.

Changes in DRIFT spectra of wood irradiated by lasers of different wavelength.

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Institute of Physics and Electrotechnics, University of West Hungary, H-9400 Sopron, Bajcsy-Zs. u. 4-6, Hungary.


An exact wavelength separation of the spectrum cannot be accomplished when utilizing common ultraviolet (UV) light sources, so the dependence of photodegradation on wavelength cannot be done directly. The photodegradation of wood resulted in by laser irradiation on various wavelengths can be studied by comparing the changes in the DRIFT spectra of various wood materials. The analysis of the difference spectrum is a widely used method to investigate the changes in the infrared spectrum. As this procedure cannot be used to compare the changes quantitatively, a new indicator was introduced, termed Band Damage Index (BDI). The BDI and the results obtained by its analysis are going to be discussed.

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