I. Brissaud et al., STUDY OF MULTILAYERS BY PIXE TECHNIQUE - APPLICATION TO PAINTINGS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 117(1-2), 1996, pp. 179-185
In this article we propose the application of a new algorithm to deter
mine the concentration profile of colour pigments in painting. This is
performed by PIXE technique at different proton energies. The algorit
hm is based on the singular value decomposition of the matrix obtained
by discretization of the integral equation for the concentration prof
ile. To check this method, many paint multilayers of acrylic colours w
ere prepared. First results obtained from different experiments at the
AGLAE accelerator in the Palais du Louvre at Paris are presented: the
nature and the thickness of each colour layer were determined with a
good agreement. The analysis of easel paintings is in progress.