Secondary Electron Emission Measurement of Insulating Materials for Spacecraft

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概要

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•   We studied how to measure the secondary electron emission (SEE) of metal and insulating materials used for satellite thermal insulation or other such purposes. The SEE yields measurement is very important for analyzing charge accumulation on satellite surfaces due to the space environment because electron emission due to irradiated electrons influences the amount of surface charge. Therefore, we tried to measure the SEE yields.   To measure SEE, we used an improved scanning electron microscope (SEM) system that has a beam-blanking unit and a Faraday cup. From this system, we can obtain the characteristics of the SEE yields from insulation materials irradiated by an electron beam with an energy of 600 eV to 5 keV.   In this report, we introduce the SEE yields measurement results of reference materials (Au, Ag and quartz glass) and insulating materials. From those results, we discuss the characteristics of SEE that depends on each material. Furthermore, we also propose a future plan of SEE measurement for satellite materials.

• 日本真空協会の論文

著者

• MIYAKE Hiroaki

  Institute of Aerospace Technology, Japan Aerospace Exploration Agency (JAXA)

• NITTA Kumi

  Institute of Aerospace Technology, Japan Aerospace Exploration Agency (JAXA)

• MICHIZONO Shinichiro

  High-Energy Accelerator Research Organization (KEK)

• SAITO Yoshio

  High-Energy Accelerator Research Organization (KEK)

関連論文

• Secondary Electron Emission Measurement of Insulating Materials for Spacecraft

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