Abstract
This paper describes experimental and analytical results of electromagnetic pulses from a charged copper pipe. Electromagnetic pulses from a copper pipe were measured by EMI type antennas (a loop antenna, a biconical antenna, and a double ridged guide antenna). In this paper, electromagnetic energy of the electromagnetic pulses was analyzed by integrating enegy spectrums of three frequency domains (1-30MHz, 30-300MHz, 300-750MHz).
As a result, the analysis shows that radiated electromagnetic energy by discahrge events does not always increase in propotion to charging voltage. In addition, high speed touch discharges by charging voltgae of 7 or 10 kV increase electromagnetic energy especilly in the frequency region of 300-750MHz.
