10.14489/td.2014.011.pp.034-038

2014, 11 November

DOI: 10.14489/td.2014.011.pp.034-038

Chigorko A.A.
ELECTRON SURFACE CHARGING TESTING OF DIELECTRIC MATERIALS FOR SPACE APPLIANCE
(pp. 34-38)

Abstract. In this paper basic tested parameters of surface charging of dielectrics irradiated by electrons are classified. The observed parameters include material parameters such as bulk and surface conductivity, emission yield; radiation-induced parameters such as radiation-induced conductivity, modified emission yield, field-enhanced emission; charging/discharging parameters such as stored charge, surface potential, time constants of charging and charge dissipation; electrostatic discharge parameters such as discharge current, rise time, impulse width, type of discharge; external environment such as temperature, pressure, electron energy and current, geometry of material. The significance of charging/discharging testing of spacecraft dielectrics is proved. Preferable ground electron charging testing methods are given. The methods are charge storage method, radiation-induced conductivity measurement under gamma-irradiation, non-contact surface potential measurement, electrostatic discharge current measurement with current probe.

Keywords: spacecraft charging, dielectrics, electron beam, surface potential, electrostatic discharge, conductivity.

+ - About the Authors Click to collapse

A. A. Chigorko
National Research Tomsk Polytechnic University, Institute of Non-Destructive Testing, Tomsk, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. The solid insulating materials. Methods for the determination of electrical resistance at a constant voltage. (1994). Ru Standard No. GOST 6433.2-71. Russian Federation. Moscow.
2. Frederickson A. R., Benson C. E. (2003). Measurement of charge storage and leakage in polyimides. Nuclear Instruments and Methods in Physics Research Section B, 208(1-4), pp. 454-460. doi: 10.1016/S0168-583X(03)00885-1.
3. Space Engineering, Spacecraft Charging. (2008). Euro Standard No. ECSS-E-ST-20-06C. European Cooperation for Space Standardization.
4. Chigorko A. A., Bezhaev Iu. A., Lukashchuk A. A. (2012). Electrostatic testing of dielectric materials for space appliance. Kontrol'. Diagnostika, (3), pp. 45-48.

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