Title :
Fields and currents from electrodynamic tethers and moving magnetic antennas
Author :
Urrutia, J.M. ; Stenzel
Author_Institution :
Dept. of Phys., California Univ., Los Angeles, CA, USA
Abstract :
Summary form only given. Laboratory measurements with computer analysis have been performed for magnetic fields excited by moving, current-carrying conductors in magnetized plasmas. Whistler "wings" are generated for moving electrodynamic tethers and whistler "cones" for magnetic dipoles moving across B/sub O/. While the moving sources carry DC currents they excite AC conduction and eddy currents in the plasma. The role of induced currents in the cross-field closure of tether currents has been addressed. The distortion of antenna radiation patterns due to the relative motion between source and plasma has been shown. These results are not only important for active experiments in space but also for receiving antennas in stream plasmas such as the solar wind.
Keywords :
whistlers; AC conduction; DC currents; active experiments; antenna radiation patterns; computer analysis; cross-field closure; distortion; eddy currents; electrodynamic tethers; magnetic dipoles; magnetic fields; magnetized plasmas; moving current-carrying conductors; moving electrodynamic tethers; moving magnetic antennas; receiving antennas; relative motion; solar wind; space; stream plasmas; whistler cones; whistler wings; Conductors; Current measurement; Electrodynamics; Laboratories; Magnetic analysis; Magnetic field measurement; Performance analysis; Performance evaluation; Plasma measurements; Plasma sources;
Conference_Titel :
Plasma Science, 1993. IEEE Conference Record - Abstracts., 1993 IEEE International Conference on
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-1360-7
DOI :
10.1109/PLASMA.1993.593524
