Electron Beam Injection and Associated Phenomena as Observed in a Large Space Simulation Chamber
Phenomena Induced by Charged Particle Beams (PICPAB) are planned to be investigated during the first Spacelab flight (FSLP) using a European payload. The PICPAB experiment (Béghin et al., 1979) consists of two accelerators of electron and ion beams and associated diagnostic instruments including wave receivers, thermal plasma probes and return current particle energy-analysers. The functional tests using prototypes of those instruments have been carried out in the large vacuum chamber SIMLES (~ 300 m3) at CNES-S0PEMEA (Toulouse-France) in february 1980. The main purpose was to perform a simulation under conditions where the ambient neutral and ionized gas, magnetic field strength and lay-out of the different packages were as close as possible to those anticipated for FSLP mission. But such a simulation cannot be undertaken ignoring plasma physics processes which are associated with the neutralization of the gun body and of the beam itself, those problems which are precisely among scientific objectives of this experiment for FSLP mission
KeywordsPlasma Column Background Plasma Ambipolar Diffusion Ambient Plasma Transverse Electric Field
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