Energy/Wavelength Dispersive X-ray Analysis

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X-ray energies strong function of Z K Be (Z = 4) 110 eV Fe (Z = 26) 6.4 keV Au (Z = 79) 68.8 keVLFe 0.70 keVAu 9.71 keV Note that EDX detectors work well only in the range 1- 20 keV

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X-ray energies strong function of Z K Be (Z = 4) 110 eV Fe (Z = 26) 6.4 keV Au (Z = 79) 68.8 keVLFe 0.70 keVAu 9.71 keV Note that EDX detectors work well only in the range 1- 20 keV

EDX DetectorsPeak energy gives qualitative informationPeak intensity gives quantitative informationCrystal (Si-drift detector or X-ray microcalorimeter)detects X-raysLiquid nitrogen cools crystal to reduce noise.Window separates detector from columnvacuum.Collimator eliminates stray X-rays.

Page 1 and 2: Energy-DispersiveSpectrometry/Spect
Page 3: Continuum X-raysContinuum X-rays or
Page 7 and 8: EDS vs. WDS• Pulse height is reco

Energy/Wavelength Dispersive X-ray Analysis

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