Ein experimenteller Beitrag zu der durch langsame Primärelektronen ausgelösten Sekundärelektronenemission |
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Authors: | Josef Hölzl |
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Institution: | 1. Physikalischen Institut der Technischen Hochschule Clausthal, Clausthal-Zellerfeld, Germany
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Abstract: | The energy distribution of secondary electrons emitted from a highly degassed polycristalline Pt surface was investigated as a function of low energy (V p ) primary electrons 5<V p <150eV. The measurements were carried out in an UHV of better than 10?10 mm Hg. The dependence of the numberN S (Ev) of secondary electrons of a fixed energyE v (3<E v <12eV) on the energyV p of the primaries (=isochromates) is studied. A lot of observations can be detected:- I.
The exit depth of true secondary electrons is strongly dependent of their energy.
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