Measurement of the gravitational acceleration of fullerene molecules

Details Measurement of the gravitational acceleration of fullerene molecules Measurement of the gravitational acceleration of fullerene molecules

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cqgra..20..567p&link_type=abstract

Classical and Quantum Gravity, Volume 20, Issue 4, pp. 567-573 (2003).

Physics

Scientific paper

Gravitational acceleration has been measured with high precision using macroscopic probes and for a few quantum probes. A recent diffraction experiment (Arndt M et al 1999 Nature 401 680) has demonstrated the wave-particle duality for the C60 fullerene molecules. In this paper, a new method to measure gravitational acceleration with fullerene molecules is proposed. The g value is deduced from the measurement of the phase shift of a thermal beam in a three-grating Mach-Zehnder interferometer. The experimental setup and the uncertainty sources are discussed. A measurement with a precision of 1 × 10-4 is feasible with 108 thermal fullerene molecules and gratings with 500 nm period. The precision achievable by the proposed method is limited by the velocity spread of the fullerene beam.

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