iven binding energies C(1s) = 290 eV, C(2s) = 20 eV, C(2p) = 10 eV. Assume X-ray source is a 1486.6 eV monochromated Al K_alpha. What are the kinetic energy peaksin an XPS spectrum for the carbon to have for each orbital

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Given binding energies C(1s) = 290 eV, C(2s) = 20 eV, C(2p) = 10 eV. Assume X-ray source is a 1486.6 eV monochromated Al K_alpha. What are the kinetic energy peaksin an XPS spectrum for the carbon to have for each orbital. Work function = zero If I use K_e = hv - K_b, do I subtract the binding energy from 1486.6 eV each time or is it cumulative at each step - 1486.6 - 290 - 20 etc?
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