AbstractExposure of Mylar and Teflon films to combined high-/medium-/low-energy electrons has been performed, its results differing from those of exposure to medium-energy electron environment alone, combined high-/medium-energy electron environment, and combined medium-/low-energy electron environment. The experimental results have shown that dielectric discharge can be initiated by high-energy electron exposure. The results of exposure of Teflon films to combined high-/medium-/low-energy electron environment agree with those of exposure to 1–100 keV d N d E ∝ E−2 spectral energy electron environment and those of NASCAP computer simulation. It is concluded that combined high-/medium-/low-energy electron exposure can perfectly simulate charging and subsequent discharging effects of dielectrics aboard geosynchronous satellites. Necessity and sufficiency of using electrons with the three different energies have been demonstrated. It is inferred that the surface potential of dielectrics on spacecraft surface will be raised and discharges will be initiated if high- and/or medium-energy electron fluxes increase to an adequate value in geosynchronous orbit during geomagnetic storms or substorms.


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    Titel :

    Charging and discharging of dielectric films irradiated by high-/medium-/low-energy electrons


    Beteiligte:
    Zhaoming, Yang (Autor:in) / Yanping, Zhou (Autor:in) / Reihong, Ge (Autor:in)

    Erschienen in:

    Acta Astronautica ; 15 , 11 ; 865-870


    Erscheinungsdatum :

    1987-03-03


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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