| Autor: |
Akstaller, Bernhard, Schreiner, Stephan, Dietrich, Lisa, Rauch, Constantin, Schuster, Max, Ludwig, Veronika, Hofmann-Randall, Christina, Michel, Thilo, Anton, Gisela, Funk, Stefan |
| Předmět: |
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| Zdroj: |
Journal of Imaging; Sep2022, Vol. 8 Issue 9, pN.PAG-N.PAG, 11p |
| Abstrakt: |
If ancient documents are too fragile to be opened, X-ray imaging can be used to recover the content non-destructively. As an extension to conventional attenuation imaging, dark-field imaging provides access to microscopic structural object information, which can be especially advantageous for materials with weak attenuation contrast, such as certain metal-free inks in paper. With cotton paper and different self-made inks based on authentic recipes, we produced test samples for attenuation and dark-field imaging at a metal-jet X-ray source. The resulting images show letters written in metal-free ink that were recovered via grating-based dark-field imaging. Without the need for synchrotron-like beam quality, these results set the ground for a mobile dark-field imaging setup that could be brought to a library for document scanning, avoiding long transport routes for valuable historic documents. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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