Testing of typical spacecraft materials in a simulated substorm environment. [1 nA/cm/sup 2/ of 2- to 20-keV electrons]
Technical Report
·
OSTI ID:7300826
An investigation to determine spacecraft materials characteristics under charging conditions was conducted at the Lewis Research Center substorm simulation facility. The test specimens were spacecraft paints, silvered Teflon, thermal blankets and solar array segments. The samples, ranging in size from 300 to 1,000 sq cm were exposed to monoenergetic electron energies from 2 to 20 keV at a current density of 1 nA sq cm. The samples generally behaved as capacitors with strong voltage gradients at their edges. The charging characteristics of the silvered Teflon, Kapton, and solar cell covers were controlled by the secondary emission characteristics. Insulators that did not discharge were the spacecraft paints and the quartz fiber cloth thermal blanket sample. All other samples did experience discharges when the surface voltage reached -8 to -16 kV. The discharges were photographed. The breakdown voltage for each sample was determined and the average energy lost in the discharge was computed.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 7300826
- Report Number(s):
- N-77-18202; NASA-TM-X-73603; E-8970-4; CONF-7610126-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
360605* -- Materials-- Radiation Effects
BREAKDOWN
CHALCOGENIDES
COATINGS
DIRECT ENERGY CONVERTERS
ELECTRIC CHARGES
ELECTRIC POTENTIAL
ELECTRONS
ELEMENTARY PARTICLES
ENERGY LOSSES
ENERGY RANGE
FERMIONS
FIBERS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
LEPTONS
MAGNETIC BAYS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PAINTS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL RADIATION EFFECTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
QUARTZ
RADIATION EFFECTS
SILICON COMPOUNDS
SILICON OXIDES
SOLAR CELLS
SPACE VEHICLES
TEFLON
360406 -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
360605* -- Materials-- Radiation Effects
BREAKDOWN
CHALCOGENIDES
COATINGS
DIRECT ENERGY CONVERTERS
ELECTRIC CHARGES
ELECTRIC POTENTIAL
ELECTRONS
ELEMENTARY PARTICLES
ENERGY LOSSES
ENERGY RANGE
FERMIONS
FIBERS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
LEPTONS
MAGNETIC BAYS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PAINTS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL RADIATION EFFECTS
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
QUARTZ
RADIATION EFFECTS
SILICON COMPOUNDS
SILICON OXIDES
SOLAR CELLS
SPACE VEHICLES
TEFLON