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Electrons Impinging on Solid Targets

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Electron-Beam Interactions with Solids

Part of the book series: Springer Tracts in Modern Physics ((STMP,volume 186))

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Abstract

The backscattering coefficient is the fraction of electrons of the primary beam that emerge from the surface of an electron-irradiated “bulk” target, where the meaning of the word “bulk” is explained in the following equations. The mean path length travelled by an electron in a solid target when its energy reduces from the primary energy E 0 to E is given by

$$ s\left( {E_0 ,E} \right) = \int_0^s {ds = \int_{E_0 }^E {{\mathbf{ }}\frac{{dE}} {{dE/ds}}} } . $$
(1)
EquationSource s\left( {E_0 ,E} \right) = \int_0^s {ds = \int_{E_0 }^E {{\mathbf{ }}\frac{{dE}} {{dE/ds}}} } . $$
(2)

(5.1) This equation allows us to calculate the maximum range of penetration,

$$ R\left( {E_0 } \right) = \int_{E_0 }^{E_{\min } } {\frac{{dE}} {{dE/ds}}} , $$
(3)

(5.2) where E min is the energy at which an electron can be considered absorbed by the target for any practical purpose.

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© 2003 Springer-Verlag Berlin Heidelberg

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(2003). Electrons Impinging on Solid Targets. In: Dapor, M. (eds) Electron-Beam Interactions with Solids. Springer Tracts in Modern Physics, vol 186. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36507-9_5

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  • DOI: https://doi.org/10.1007/3-540-36507-9_5

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  • Print ISBN: 978-3-540-00652-7

  • Online ISBN: 978-3-540-36507-5

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