<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">x-ray excited optical luminescence</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31341323</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:32:03</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">XEOL</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ An X-ray spectroscopy technique, usually synchrotron-based, that provides information on the chemical state and short-range atomic order of the top few microns of a surface. It concerns the conversion of the X-ray energy absorbed by the system to optical photons often involving multi-step cascade processes. XEOL is often used together with XANES/NEXAFS to provide site specificity which in turn can help reveal the electronic structure and optical properties of the system of interest.  ]]></dc:description></metadata>