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Qué (quién) es X-ray fluorescence - definición
X-ray fluorescence
![A portable XRF analyzer using a [[silicon drift detector]]](https://commons.wikimedia.org/wiki/Special:FilePath/20180221-OSEC-LSC-0055 (39518128545).jpg?width=200 "A portable XRF analyzer using a [[silicon drift detector]]")
![Helmut Fischer(company)]] X-ray fluorescence spectrometer which are used to check for metals coating thickness and any of potential contamination of unapproved [[RoHS]] materials](https://commons.wikimedia.org/wiki/Special:FilePath/Fischer XRF machine.jpg?width=200 "Helmut Fischer(company)]] X-ray fluorescence spectrometer which are used to check for metals coating thickness and any of potential contamination of unapproved [[RoHS]] materials")
![Chemist operates a [[goniometer]] used for X-ray fluorescence analysis of individual grains of mineral specimens, [[U.S. Geological Survey]], 1958.](https://commons.wikimedia.org/wiki/Special:FilePath/XRFgoniometer manual.jpg?width=200 "Chemist operates a [[goniometer]] used for X-ray fluorescence analysis of individual grains of mineral specimens, [[U.S. Geological Survey]], 1958.")
EMISSION OF CHARACTERISTIC "SECONDARY" X-RAYS FROM A MATERIAL THAT HAS BEEN EXCITED BY HIGH-ENERGY X-RAYS OR GAMMA RAYS
X-Ray fluorescence; X-ray fluorescence spectroscopy; X-Ray Fluorescence Spectroscopy; X-ray fluorescence analysis; Rowland circle; X-ray fluorimetry; XRFS; XRF technology; Characteristic radiation; X-ray fluorescence spectrometry; XRF analysis; X-Ray fluorescent
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. The phenomenon is 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 objectsDe Viguerie L, Sole VA, Walter P, Multilayers quantitative X-ray fluorescence analysis applied to easel paintings, Anal Bioanal Chem.
characteristic radiation
EMISSION OF CHARACTERISTIC "SECONDARY" X-RAYS FROM A MATERIAL THAT HAS BEEN EXCITED BY HIGH-ENERGY X-RAYS OR GAMMA RAYS
X-Ray fluorescence; X-ray fluorescence spectroscopy; X-Ray Fluorescence Spectroscopy; X-ray fluorescence analysis; Rowland circle; X-ray fluorimetry; XRFS; XRF technology; Characteristic radiation; X-ray fluorescence spectrometry; XRF analysis; X-Ray fluorescent
¦ noun radiation consisting of wavelengths which are peculiar to the element which emits them.
Micro-X-ray fluorescence
Micro x-ray fluorescence (µXRF) is an elemental analysis technique that relies on the same principles as x-ray fluorescence (XRF). Synchrotron X-rays may be used to provide elemental imaging with biological samples.
Ejemplos de uso de X-ray fluorescence
1. The scientists have an arsenal of tests – from microscopy and X–rays to more complicated ones with names like X–ray fluorescence and Raman spectroscopy – to analyze just what an object (or the grime on its surface) is made of, how it was made and what can be done to repair or stabilize a problem.
2. For the Consumer Product Safety Commission, the path to greater vigilance over hazards posed by lead–tainted toys, defective water heaters and flaming deep fryers starts with 10 X–ray fluorescence analyzers (cost: about $30,000 apiece), a couple of dozen port inspectors ($3.2 million) and a new testing lab (initial cost $8 million). After decades of budget cuts left the agency ill–equipped to police a rising tide of imports, the CPSC has begun to recover.