In this paper electromagnetic fields radiated from a railgun operating system with a plasma armature are investigated. A small-bore railgun has been fabricated in our laboratory, a capacitor bank (0.12 F-160 V) has been used as energy supply and an experimental setup has been implemented. Experiments have been performed in a remotely operated shielded semi-anechoic chamber in conformity with current standards. The analysis has been conducted in the time domain, using suitable current probes and antennas and an oscilloscope with high bandwidth and high sampling rate. Results were reproducible and a comparison and discussion with previous work are reported.
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