Abstract
We had the opportunity to study a large panel (100 × 80 cm) containing more than 40 stained glass pieces. Among them several come from restorations having taken place at different periods.
The study of this rather complex arrangement has been processed by stages:
• the elemental composition of 16 zones were determined: several differences were identified and among them the Na/K ratio which allowed to set three groups of glass type;
• the measurement of the Na concentrations by the two techniques give information in bulk (PIGE) and at the near surface (PIXE); the values defined by the (CPIGE–CPIXE))/CPIGE plotted in function of the historical estimation of the age of the stained glass pieces (original and restored) indicate a real correlation between the two variables;
• the red-colored pieces were specially investigated in order to determine which coloration technique was employed (bulk coloration, superficial staining, multilayered flashing, etc.);
• the corrosion was investigated by scanning two different worsened zones with a 0.5 mm diameter beam spot.
This study shows the possibilities of the PIGE–PIXE association, but also points out some weaknesses, which have to be solved by other techniques; unfortunately, in that case, the non-destructive aspect could be lost.
The study of this rather complex arrangement has been processed by stages:
• the elemental composition of 16 zones were determined: several differences were identified and among them the Na/K ratio which allowed to set three groups of glass type;
• the measurement of the Na concentrations by the two techniques give information in bulk (PIGE) and at the near surface (PIXE); the values defined by the (CPIGE–CPIXE))/CPIGE plotted in function of the historical estimation of the age of the stained glass pieces (original and restored) indicate a real correlation between the two variables;
• the red-colored pieces were specially investigated in order to determine which coloration technique was employed (bulk coloration, superficial staining, multilayered flashing, etc.);
• the corrosion was investigated by scanning two different worsened zones with a 0.5 mm diameter beam spot.
This study shows the possibilities of the PIGE–PIXE association, but also points out some weaknesses, which have to be solved by other techniques; unfortunately, in that case, the non-destructive aspect could be lost.
| Original language | English |
|---|---|
| Pages (from-to) | 512-519 |
| Number of pages | 8 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 240 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2005 |