X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays. When a material is illuminated with high-energy X-rays, its atoms can become excited and emit their own unique, characteristic X-rays—a process similar to how a blacklight makes certain colors fluoresce. By measuring the energy and intensity of these emitted "secondary" X-rays, scientists can identify which elements are present in the sample and in what quantities. Thus, XRF is the basis of a non-destructive analytical technique widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science, archaeology and art objects such as paintings.
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👉 XRF analysis in the context of Birmingham Quran manuscript
The Birmingham Quran manuscript comprises two leaves of parchment from an early Quranic manuscript or muṣḥaf. In 2015, the manuscript, which is held by the University of Birmingham in England, was radiocarbon dated to between 632 and 645 CE. It is presently believed that the manuscript is an early descendant of the Uthmanic codex. It is part of the Mingana Collection of Middle Eastern manuscripts, held by the university's Cadbury Research Library.
The manuscript is written in ink on parchment, using an Arabic Hijazi script and is still clearly legible. The leaves preserve parts of Surahs 19 (Maryam) to 20 (Taha). It was on display at the University of Birmingham in 2015 and then at Birmingham Museum and Art Gallery until 5 August 2016. The Cadbury Research Library has carried out multispectral analysis of the manuscript and XRF analysis of the inks.