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Phenomenology of surface arcs on spacecraft dielectric materials (1982)

Reeves, R. D. ; Balmain, K. G. ; Gossland, M. ; [et al.]

In: CASI

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Publication Date: 2019-06-28

Description: For electron beam incidence on large specimens of Kapton thermal blanket material, surface arc discharges are shown to cause damage consisting of punchthrough holes which act as focal points for other types of damage, including subsurface tunnels, blowout holes and surface breakup. Under electron bombardment, dielectric sheet specimens separated by a gap are shown to discharge simultaneously. Teflon specimens which have been brushed or rubbed are shown to exhibit directional guidance of discharge arcs, and this phenomenon has been used to generate straight arcs whose velocities have been measured optically.

Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE

Type: in ESA Spacecraft Mater. in a Space Environ.; p 263-268

Format: text

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