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1. The process of replacing the air present surrounding the x-ray tube and detector with helium gas to permit the direct analysis of magnesium, aluminum, silicon, phosphorus and low levels of sulfur in a variety of sample types. 2. the method preferred over vacuum purge systems for analysis of magnesium, aluminum, silicon, phosphorus and sulfur resulting from its higher reliability and reduced potential for instrument contamination. 3. the technique employed by handheld Niton® XL3t 900 Series XRF analyzers for light element analysis in metal alloys, mining, and soil samples.
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1. the process of evacuating the air present surrounding the x-ray tube and detector to permit the direct analysis of magnesium, aluminum, and silicon in metal alloys. 2. an inferior method for light element analysis, as compared to helium purge, because of its reduced reliability and higher potential for instrument contamination.
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1. One of two or more atoms having the same atomic number, but different numbers of neutrons. 2. The primary excitation source for portable XRF analyzers until we introduced the XLt in 2002. 3. see Infiniton.
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XL3p, n. Physics 1. Third-generation handheld Niton XRF analyzer with Infiniton™ source optimized for numerous applications where local radiation control regulations limit the use of x-ray tube-based XRF analyzers. 2. an XRF analyzer equipped with an Infiniton source; the only XRF analyzer which never requires source replacement.
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XL3t, n. Physics 1. Third-generation handheld Thermo Scientific Niton XRF analyzer with the highest power x-ray tubes ever used in a portable XRF analyzer, providing users with faster measurements, lower detection limits, and higher throughput for improved productivity and profitability.
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XLi, n. Physics 1. ultra-portable, ergonomically designed, XRF analyzer available with a suite of radioisotope excitation sources optimized for various applications, including in-service PMI testing and contaminated site assessment. 2. an XRF analyzer equipped with an Infiniton™ source.
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XLp, n. Physics 1. pistol-shaped, ergonomically designed, XRF analyzer available with a suite of radioisotope excitation sources optimized for various applications, including scrap metal sorting and lead paint testing. 2. an XRF analyzer equipped with an Infiniton™ source.
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XLt, n. Physics 1. the world's first commercial, high-performance x-ray tube-based XRF analyzer optimized for QA/QC, PMI, scrap metal sorting, and contaminated site assessment. 2. an XRF analyzer that minimizes the regulatory requirements often encountered with radioisotope-based XRF analyzers.
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x-ray tube, n. Physics 1. a vacuum tube containing electrodes,... accelerates electrons and directs them to a metal anode where their impact produces x-ray photons on demand.
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XRF, abrv., x-ray fluo·res·cence, n. Physics 1. the emission of x-rays from a substance during exposure to an external source of x-rays. 2. the process by which a nondestructive test for material composition is performed. 3. the technique, perfected by Niton in the 1990s and revolutionized at the turn of this century, whereby use are offered a choice of instrument platforms, excitation sources, calibration models and modes of operation, virtually guaranteeing at least one configuration optimized for their application.
