Single Scattering EELS Spectrum and its Signal Extraction - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book http://www.globalsino.com/EM/ | ||||||||
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For the single scattering spectrum, the overall intensity of the spectrum can be given by, Equation 956a can be re-written to represent the spectrum as a power-law background and core-loss profile for each edge: In EELS measurements, the single scattering spectrum can be approximately given by, [1] The step-function in Equations 956d and 956e is introduced to simplify the (weak) angular dependence of the oscillator strength on scattering angle. Then, the single scattering
into an aperture of semi-angle β can be given by, The EELS signal from single scattering can be modeled using Poisson Distribution.
[1] C. Colliex, V. E. Cosslett, R.D.Leapman, P.Trebbia, Contribution of electron energy loss spectroscopy to the development of analytical electron microscopy, 1 (3–4), (1976), 301-315.
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