Gert Rietveld, Neil M. Zimmerman, and Helko E. van den Brom, “First Experimental Results of the Frequency Dependence of a Vacuum-Gap Capacitor between 1 kHz and 0.01 Hz”, Submitted for publication in the Proceedings of the 2012 Conference on Precision Electromagnetic Measurements, Washington, US (2012).
This paper describes the first results of an experiment aiming to determine the frequency dependence of a cryogenic vacuum-gap capacitor between 0.01 Hz ('DC') and 1 kHz (AC). The AC-'DC' difference of the vacuum-gap capacitor is measured as a function of temperature, and the measured change of around 23 J.1F/F between 273 K and 4 K agrees well with an extrapolation of earlier measurements on the same capacitor between 100 Hz and 1 kHz. The results also seem to support estimates that the AC-'DC' difference of this capacitor is well below 1 J.1F/F at 4 K.
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