We have recently completed a measurement of the Newtonian constant of gravitation G using atomic interferometry. Our result is G = 6.67191(77)(62) × 10 −11 m 3 kg −1 s −2 where the numbers in parenthesis are the type A and type B standard uncertainties, respectively. An evaluation of the measurement uncertainty is presented and the perspectives for improvement are discussed. Our result is approaching the precision of experiments based on macroscopic sensing masses showing that the next generation of atomic gradiometers could reach a total relative uncertainty in the 10 parts per million range.
M. Prevedelli, L. Cacciapuoti, G. Rosi, F. Sorrentino, G. M. Tino (2014). Measuring the Newtonian constant of gravitation G with an atomic interferometer. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A: MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 372, 20140030/1-20140030/15 [10.1098/rsta.2014.0030].
Measuring the Newtonian constant of gravitation G with an atomic interferometer
PREVEDELLI, MARCO;
2014
Abstract
We have recently completed a measurement of the Newtonian constant of gravitation G using atomic interferometry. Our result is G = 6.67191(77)(62) × 10 −11 m 3 kg −1 s −2 where the numbers in parenthesis are the type A and type B standard uncertainties, respectively. An evaluation of the measurement uncertainty is presented and the perspectives for improvement are discussed. Our result is approaching the precision of experiments based on macroscopic sensing masses showing that the next generation of atomic gradiometers could reach a total relative uncertainty in the 10 parts per million range.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
