Space Environment

CEDRE
Assessment of the Charging/Discharge of Dielectric Material under Electron Beam

Objectives

• Study of charges/discharges effects on space dielectric materials in a space environment
• Expertise and qualification of prototyps and industrial sub-elements
• Measurement of radiation induced conductivity as a function of temperature
• Temporal and frequencial caracterisations of the discharge

Characteristics

• Pressure ~ 10^-6 hPa, cryogenic screen
• Monoenergetic electron beam (3 - 35 keV, from 0.05 to 5nA/cm²)
• Sample capacity of three faces of 20X20 cm²
• Temperature of sample holder controled from -180 up to +120°C
• Instrumentation with photography, current probes (sampling at 1 ns, bandwith 300 Mhz) and voltage probes (-20,+20kV)...

Funding

• Centre National d'Etudes et de Recherches Aérospatiales (ONERA)
• Centre National d'Etudes Spatiales (CNES)

Last Update:April 25, 2003 - © ONERA 2009 - Terms of use