Applications of Secondary Electron Energy-and-Angular-Distributions to Spacecraft Charging

Details Applications of Secondary Electron Energy-and-Angular-Distributions to Spacecraft Charging Applications of Secondary Electron Energy-and-Angular-Distributions to Spacecraft Charging

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998sct..conf..275n&link_type=abstract

Proceedings of the 6th Spacecraft Charging Conference. November 2-6, 1998. AFRL Science Center, Hanscom AFB, MA, USA., p.275-280

Computer Science

Scientific paper

Secondary electron (SE) emission from spacecraft surfaces as a result of energetic electron bombardment is a key process in the electrical charging of spacecraft. It has been suggested that incorporating more complete knowledge of the energy- and angular-distributions of secondary electrons is necessary to fullymodel how SE emission and spacecraft charging are affected by re-adsorption of low energy electrons in the presence of charge-induced electrostatic fields and ambient magnetic fields in the spacecraft environment. We present data for such energy- and angular-distributions from sputtered, polycrystalline gold surfaces. The data are compared to empirical SE emission models and found to agree well. We also discuss at what level inclusion of such energy- and angular-distributions will affect models of spacecraft charging for both positive and negative surface charging.

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