Proposal for new experimental schemes to realize the Avogadro constant

Biraben, F.; Cadoret, M.; Clad, P.; Genevs, G.; Gournay, P.; Guellati-Khlifa, S.; Julien, L.; Juncar, P.; De Mirandes, E.; Nez, F.

Proposal for new experimental schemes to realize the Avogadro constant

Authors

Description

We propose two experimental schemes to determine and so to realize the Avogadro constant $N\_{A}$ at the level of 10$^{-7}$ or better with 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 achievable uncertainties and we discuss the opportunity to test the existence of possible unknown correction factors for the Josephson effect and quantum Hall effect.