Nist researchers complete uncertainty analysis for linking ECCS to SI farad. (General Developments).(Electron-Counting Capacitance Standard)

Journal of Research of the National Institute of Standards and Technology | September 1, 2002 | Copyright

NIST researchers have completed an uncertainty analysis for the comparison of a cryogenic vacuum-gap capacitor against the NIST calculable capacitor. This work is a critical step in the development of the Electron-Counting Capacitance Standard (ECCS).

The essential idea of the ECCS is to place an accurately known electric charge, by counting individually each of about [10.sup.8] electrons, onto the plate of a cryogenic vacuum-gap capacitor and then to measure the charging voltage with high accuracy. The capacitance of the device is determined directly from the ...

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