Faraday Cup - Error Sources

Error Sources

The counting of charges collected per unit time is impacted by two error sources: 1) the emission of low-energy secondary electrons from the surface struck by the incident charge and 2) backscattering (~180 degree scattering) of the incident particle, which causes it to leave the collecting surface, at least temporarily. Especially with electrons, it is fundamentally impossible to distinguish between a fresh new incident electron and one that has been backscattered or even a fast secondary electron.

Read more about this topic:  Faraday Cup

Famous quotes containing the words error and/or sources:

    An error is the more dangerous in proportion to the degree of truth which it contains.
    Henri-Frédéric Amiel (1821–1881)

    The sources of poetry are in the spirit seeking completeness.
    Muriel Rukeyser (1913–1980)