Give+a+brief+description+about+Energy+Dispersive+X-ray+System+(EDS)+and+what+it+does

“The Oxford Pentafet energy dispersive X-ray detector (EDS) is available for qualitative and semi-quantitative elemental analysis. The EDS detector has an ultra-thin window that allows for element detection of carbon and higher atomic number elements. An elemental or X-ray map of the surface can also be obtained using this detector. Also, EDS identifies the elemental composition of materials imaged in a Scanning Electron Microscope for all elements with an atomic number greater than boron. Most elements are detected at concentrations of order 0.1%. Also, instead of using EDS, WDS is possible.” WDS identifies the elemental composition of materials imaged in the __SEM__ with an order of magnitude better spectral resolution, sensitivity and ability to determine concentratins of light elements than is achievable with EDS. Most elements are detected below 0.1% and some as low as a few ppm. http://www.siliconfareast.com/SEMTEM.htm X-ray microanalysis in the scanning electron microscope is accomplished using EDS and/or WDS. EDS is more commonly applied due to its simplicity and speed, while WDS offers an important and often critical refinement of EDS data by providing And here is an example of showing EDS. To show EDS, they use this kind of graph. The letter written which is yellow shows the element with the series of Alpha and Beta.
 * WDS vs. EDS**

EDS Spectra of Nd-Fe-B Permanent Magnet (7.5 KB GIF)