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An electron microprobe (EMP), also known as an electron probe microanalyzer (EPMA) or electron micro probe analyzer (EMPA), is an analytical tool used to non-destructively determine the chemical composition of small volumes of solid materials. It works similarly to a scanning electron microscope: the sample is bombarded with an electron beam, emitting x-rays at wavelengths characteristic to the elements being analyzed. This enables the abundances of elements present within small sample volumes (typically 10-30 cubic micrometers or less) to be determined, when a conventional accelerating voltage of 15-20 kV is used. The concentrations of elements from lithium to plutonium may be measured at levels as low as 100 parts per million (ppm), material dependent, although with care, levels below 10

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  • Microsonda d'electrons (ca)
  • Elektronenstrahlmikroanalyse (de)
  • Electron microprobe (en)
  • Microsonda elettronica (it)
  • Microsonde de Castaing (fr)
  • 電子線マイクロアナライザ (ja)
  • Рентгеноспектральный микроанализ (ru)
  • 电子微探针 (zh)
rdfs:comment
  • La microsonda d'electrons, microsonda electrònica o microsonda de Castaing (en anglès: electron probe microanalyser, EPMA) és una microsonda utilitzada com a mètode d'anàlisi dels elements químics inventada l'any 1951 per . Consisteix a bombardejar una mostra amb electrons i analitzar l' dels raigs X emesos per la mostra davant aquest bombardeix d'electrons. La conceentració dels elements des del bor al plutoni es pot mesurar a nivells tan baixos com 100 parts per milió (ppm). Millores recents permeten arribar a nivells d'uns 10 ppm. (ca)
  • Die Elektronenstrahlmikroanalyse (ESMA; engl. electron probe micro analysis, EPMA, oder X-ray microanalysis) dient primär der zerstörungsfreien Analyse von Festkörperoberflächen mit lateraler Auflösung bis zu 1 µm. (de)
  • La microsonde de Castaing (en anglais electron probe microanalyser, EPMA) est une méthode d'analyse élémentaire inventée en 1951 par Raimond Castaing. Elle consiste à bombarder un échantillon avec des électrons et à analyser le spectre des rayons X émis par l'échantillon sous cette sollicitation. (fr)
  • 電子線マイクロアナライザ（でんしせんマイクロアナライザ、英: Electron Probe Micro Analyzer）または電子プローブ微小分析器、略称 EPMAとは電子線を対象物に照射する事により発生する特性X線の波長と強度から構成元素を分析する電子マイクロプローブ（EMP）装置の一つである。二次電子像や反射電子像による観察が主体の電子顕微鏡に特性X線検出器としてエネルギー分散型X線分析(EDS)を付加したもの（分析用のSEMやTEM、など）と比較して、EPMAは元素分析を主体としたものであり、特性X線検出器に波長分散型X線分析(WDS)を用いるために定量精度は良いが検出効率が悪く、より高い照射電流を必要とする。 10~30立方マイクロメータの試料があればホウ素からプルトニウムまで100(ppm)を下限とする検出感度で定量的に分析出来る。 (ja)
  • 电子微探针（英語：Electron microprobe，縮寫 EMP），也被称为电子探针显微分析（electron probe microanalyzer，EPMA）或电子微探针分析仪（electron micro probe analyzer，EMPA），是一種用於非破性檢定少量固體材料化學成分的分析工具。它是用聚焦很细、直径小于1um的电子束轰击待分析试样上的微小区域，对激发出的特征X射线、二次电子、二次离子、背散射电子、俄歇电子、透射电子、吸收电子、阴极荧光等进行探测和信息处理的现代仪器分析方法，是电子光学技术与X射线光谱分析技术交汇的产物。 (zh)
  • An electron microprobe (EMP), also known as an electron probe microanalyzer (EPMA) or electron micro probe analyzer (EMPA), is an analytical tool used to non-destructively determine the chemical composition of small volumes of solid materials. It works similarly to a scanning electron microscope: the sample is bombarded with an electron beam, emitting x-rays at wavelengths characteristic to the elements being analyzed. This enables the abundances of elements present within small sample volumes (typically 10-30 cubic micrometers or less) to be determined, when a conventional accelerating voltage of 15-20 kV is used. The concentrations of elements from lithium to plutonium may be measured at levels as low as 100 parts per million (ppm), material dependent, although with care, levels below 10 (en)
  • Una microsonda elettronica, in inglese conosciuta come electron microprobe (EMP) o electron probe microanalyzer (EPMA) o ancora electron micro probe analyzer (EMPA) è uno strumento utilizzato per stabilire la composizione chimica di una piccola quantità di una sostanza solida in maniera non distruttiva. Il suo funzionamento è analogo a quello di un microscopio elettronico a scansione: il campione è bombardato con un fascio di elettroni e questo emette raggi X ad una lunghezza d'onda caratteristica dell'elemento analizzato. Questo permette di determinare l'abbondanza degli elementi presenti in un campione di piccole dimensioni (solitamente 10-30 micrometri cubici). La microsonda elettronica permette di misurare la concentrazione degli elementi compresi fra il boro e il plutonio fino a livel (it)
  • Рентгеноспектральный микроанализ (микрорентгеноспектральный анализ, электронно-зондовый рентгеноспектральный анализ, электронно-зондовый микроанализ) — методика, позволяющая с помощью электронного микроскопа или специального электронно-зондового микроанализатора ("микрозонд") получить информацию о химическом составе образца в произвольно выбранном участке микроскопических размеров. Количественный рентгеноспектральный микроанализ (ru)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/1886VE10-optical.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/EPMA.jpg
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