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Proceedings Paper

Effects of gamma irradiation on the colour of pigments
Author(s): D. C. Negut; C. C. Ponta; Rodica M. Georgescu; I. V. Moise; Gh. Niculescu; A. I. M. Lupu
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Paper Abstract

The aim of this paper is to investigate the influence of gamma irradiation process on the colour of painted wood panels. Insects and micro-organisms are frequently identified enemies of cultural objects from museums and archives. Based on its biocide effect, gamma radiation could be used for decontamination and conservation purposes. Important advantages can be mentioned in its favour: no toxic or radioactive residues remained in the treated item; large amount of objects can be treated quickly; excellent reliability; attractive cost. In case of emergency radiation treatment in industrial facilities is probably the only method that can be used. There is also a potential side-effect. Interaction of gamma rays with any substance may change its chemical and physical properties. The change is proportional with the irradiation dose. In the case of paintings, eventually colour changes have to be evaluated. Such an approach actually establishes irradiation treatment limitations. A portable integrating sphere spectrophotometer was used for colour measurements. The results of colour analysis before and after the radiation treatment of the painted wood panels are reported and discussed.

Paper Details

Date Published: 19 July 2007
PDF: 10 pages
Proc. SPIE 6618, O3A: Optics for Arts, Architecture, and Archaeology, 66180R (19 July 2007); doi: 10.1117/12.725967
Show Author Affiliations
D. C. Negut, Horia Hulubei National Institute of R&D for Physics and Nuclear Engineering (Romania)
C. C. Ponta, Horia Hulubei National Institute of R&D for Physics and Nuclear Engineering (Romania)
Rodica M. Georgescu, Horia Hulubei National Institute of R&D for Physics and Nuclear Engineering (Romania)
I. V. Moise, Horia Hulubei National Institute of R&D for Physics and Nuclear Engineering (Romania)
Gh. Niculescu, National Research Institute for Conservation and Restoration of Movable National Cultural Heritage (Romania)
A. I. M. Lupu, National Art Museum of Romania (Romania)


Published in SPIE Proceedings Vol. 6618:
O3A: Optics for Arts, Architecture, and Archaeology
Costas Fotakis; Luca Pezzati; Renzo Salimbeni, Editor(s)

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