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- W2040209237 abstract "Porous structure can strongly change the electric behavior of material submitted to bombardment by energetic electrons: strong electric fields (${10}^{8}$ V/m) can grow within the pores, because of the small sizes of these pores. We give a model of porous material that enables us to emphasize and illustrate the enhancement of the yield of secondary-electron emission (and the broadening in frequency of its profile) in a porous medium, compared to that in bulk material. Here we have considered materials of astrophysical interest [graphite, iron, aluminum (${mathrm{Al}}_{2}$${mathrm{O}}_{3}$), and silica]. The enhancement is characterized by two emission peaks for small energies of the primary electrons and by an increase of the yield roughly by a factor of 4 for large energies (>1 keV)." @default.
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- W2040209237 date "1995-07-01" @default.
- W2040209237 modified "2023-09-25" @default.
- W2040209237 title "Secondary-electron emission from porous solids" @default.
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- W2040209237 doi "https://doi.org/10.1103/physreva.52.433" @default.
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