F Biraben et al 2006 Metrologia 43 L47 doi:10.1088/0026-1394/43/6/N05
F Biraben1, M Cadoret1, P Cladé1, G Genevès2, P Gournay2, S Guellati-Khélifa3, L Julien1, P Juncar3, E de Mirandes1 and F Nez1
Show affiliationsWe propose two experimental schemes for the determination of the Avogadro constant NA with a relative uncertainty of 10−7 or better combining a watt balance experiment and a cold atom experiment measuring h/m(X) (where h is the Planck constant and m(X) the mass of the atom X). We give some prospects about possible uncertainties, and we discuss the opportunity to test the existence of possible unknown correction factors for the Josephson effect and the quantum Hall effect.
06.20.Jr Determination of fundamental constants
73.43.Fj Novel experimental methods; measurements
74.50.+r Tunneling phenomena; point contacts, weak links, Josephson effects
Issue 6 (December 2006)
Received 8 June 2006
Published 6 November 2006
F Biraben et al 2006 Metrologia 43 L47
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