Electrostatic discharge induced thermo-optical degradation of optical solar reflectors (OSRs)

Bogorad, A.; Bowman, Cheryl L.; Lloyd, T.; Loman, J.; Armenti, J.

doi:10.1109/23.124152

Cited by 7 publications

(1 citation statement)

References 10 publications

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“…discharges with the surroundings metal surfaces [21][22][23][24][25] and can, therefore, produce hindrance to the smooth functionality of the satellite, during the mission period. A study on the surface voltage developed on the polyimide exposed to different energy electrons is therefore important for space technology.…”

Section: Introductionmentioning

confidence: 99%

Growth and decay of surface voltage on silver diffused polyimide exposed to 3–15 keV electrons

Mahapatra¹,

Dhole²,

Bhoraskar³

2007

J. Phys. D: Appl. Phys.

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During electron irradiation, the growth in the surface voltage on virgin and silver diffused polyimide sample was studied by varying electron energy from 3 to 15 keV and beam diameter from 3 to 15 mm. At a constant beam current, the surface voltage increased nonlinearly with electron energy but decreased slowly with beam diameter at fixed electron energy. At a surface voltage around saturation or beyond 3 kV, the electron beam was switched off and the decay in the surface voltage was studied for a period of 9 × 104 s. The surface analysis revealed that the relative concentrations of carbon increased and that of the oxygen and the nitrogen decreased in the electron irradiated virgin and silver diffused polyimide sample, however in different proportions. Under the identical conditions of electron irradiation, the growth rate of the surface voltage, the post irradiated surface resistivity and the voltage decay constant of the silver diffused polyimide were lower than that of the virgin polyimide. The results of the present study reveal that the resistance of the silver diffused polyimide to keV electrons is higher than that of the virgin polyimide.

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