Detection and Analysis of RF Data from Hypervelocity Impacts
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چکیده
Ground based tests were performed at the Max-Planck-Institute für Kernphysik Van de Graaff accelerator in Heidelberg, Germany to explore radiofrequency (RF) emission associated with hypervelocity particle impact induced plasma. Meteoroids and dust traveling between 11 and 72.8 km/s are constantly bombarding spacecraft while on orbit. These hypervelocity particles may cause electrical anomalies in satellites through electromagnetic pulse (EMP) or electrostatic discharge (ESD). Ground tests were conducted by firing iron dust particles at speeds in excess of 11 km/s at target materials situated in a 1m diameter vacuum chamber. A set of broadband log-periodic dipole antenna, VLF loops, and a point electric field sensor are used to detect emission. The signal is dissected in order to corroborate the model of RF emission due to coherent plasma oscillation.
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تاریخ انتشار 2011