CURRENT FLOW-THROUGH HIGH-VOLTAGE SHEATHS OBSERVED BY THE TEMAG EXPERIMENT DURING TSS-1R

During the TSS-1R flight, conditions occurred under which very intense currents flowed through the tether wire system. The effect of these c urrents during the active phases of operation was clearly seen by the TEMAG sensor assembly located on the short, fixed satellite boom. Magn etic signatures appeared on the field components parallel to the boom and to the spin axis with a strong peak when the boom points closer to the ram direction. While a toroidal current flowing on the ram side o f the plasma sheath may explain the main features seen by the TEMAG ou tboard sensor further studies are needed for the physical interpretati on of the complex electrodynamic interactions of the TSS-ionosphere sy stem.