Title :
Precision measurement of the gravitational constant with atom interferometry
Author :
Tino, G.M. ; Rosi, Gabriele ; Sorrentino, Fabio ; Cacciapuoti, Luigi ; Prevedelli, M.
Author_Institution :
Dipt. di Fis. e Astron. & LENS, Univ. di Firenze, Sesto Fiorentino, Italy
Abstract :
We report on the current performance of our atom interferometry gravity gradiometer. After careful elimination of the main sources of fluctuations and biases in the atom interferometer, we achieve a sensitivity of 3×10-9 g per second to differential gravity; by modulating the position of a set of source masses, we achieve a relative statistical uncertainty of 1.1 × 10-4 to the gravitational constant G.
Keywords :
atom optics; gravimeters; gravitational constant; particle interferometry; atom interferometry gravity gradiometer; differential gravity; gravitational constant; precision measurement; relative statistical uncertainty; sensitivity; Atomic beams; Atomic measurements; Gravity; Laser beams; Measurement by laser beam; Position measurement; Time measurement;
Conference_Titel :
European Frequency and Time Forum & International Frequency Control Symposium (EFTF/IFC), 2013 Joint
Conference_Location :
Prague
DOI :
10.1109/EFTF-IFC.2013.6702069
