Summary form only given. We report on the accurate measurement of the Newtonian constant of gravity G, using an atom interferometry gravity-gradiometer. The probes of the gravitational field are two clouds of laser cooled 87Rb atoms vertically separated. Their differential vertical acceleration is measured for different positions of nearby source masses. After preliminary results obtained with lead masses, the gravitational signal is generated now by heavier, well-characterized tungsten masses. The systematic effects affecting the accuracy of the measurement have been carefully evaluated.
Accurate measurement of the Newtonian constant of gravity using atom interferometry / A. Bertoldi; G. Lamporesi; L. Cacciapuoti; M. Prevedelli; G.M. Tino. - STAMPA. - (2007), pp. 1-1. (Intervento presentato al convegno Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on tenutosi a Munich, Germany nel 17-22 June 2007) [10.1109/CLEOE-IQEC.2007.4386819].
Accurate measurement of the Newtonian constant of gravity using atom interferometry
BERTOLDI, ANDREA;LAMPORESI, GIACOMO;CACCIAPUOTI, LUIGI;PREVEDELLI, MARCO;TINO, GUGLIELMO MARIA
2007
Abstract
Summary form only given. We report on the accurate measurement of the Newtonian constant of gravity G, using an atom interferometry gravity-gradiometer. The probes of the gravitational field are two clouds of laser cooled 87Rb atoms vertically separated. Their differential vertical acceleration is measured for different positions of nearby source masses. After preliminary results obtained with lead masses, the gravitational signal is generated now by heavier, well-characterized tungsten masses. The systematic effects affecting the accuracy of the measurement have been carefully evaluated.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
