p41_044 - . That this dierence is much greater in iron is...

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44. The result of problem 3 in Chapter 39 is adapted to these units ( hc = 1240 eV · nm = 1240 keV · pm). For the K α line from iron E = hc λ = 1240 keV · pm 193 pm =6 . 4keV . We remark that for the hydrogen atom the corresponding energy di±erence is E 12 = (13 . 6eV) µ 1 2 2 1 1 1 =10eV
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Unformatted text preview: . That this dierence is much greater in iron is due to the fact that its atomic nucleus contains 26 protons, exerting a much greater force on the K- and L-shell electrons than that provided by the single proton in hydrogen....
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