Atom interferometry gravity-gradiometer for the determination of the Newtonian gravitational constant G

Year: 2006

Authors: Bertoldi A., Lamporesi G., Cacciapuoti L., de Angelis M., Fattori M., Petelski T., Peters A., Prevedelli M., Stuhler J., Tino G.M.

Autors Affiliation: Dipartimento di Fisica and LENS, Università di Firenze, INFN, Sezione di Firenze, Via Sansone 1, 50019 Sesto Fiorentino (Firenze), Italy

Abstract: We developed a gravity-gradiometer based on atom interferometry for the determination of the Newtonian gravitational constant G. The apparatus, combining a Rb fountain, Raman interferometry and a juggling scheme for fast launch of two atomic clouds, was specifically designed to reduce possible systematic effects. We present instrument performances and preliminary results for the measurement of G with a relative uncertainty of 1%. A discussion of projected accuracy for G measurement using this new scheme shows that the results of the experiment will be significant to discriminate between previous inconsistent values.

Journal/Review: EUROPEAN PHYSICAL JOURNAL D

Volume: 40 (2)      Pages from: 271  to: 279

KeyWords: atom interferometry; gradiometer; gravitational constant
DOI: 10.1140/epjd/e2006-00212-2

Citations: 94
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