Continuous g monitoring with atom interferometry

Author

Farah, Tristan ; Clairon, André ; Landragin, Arnaud ; Merlet, Sébastien ; Dos Santos, Franck Pereira ; Louchet-Chauvet, Anne

Author_Institution

LNE-SYRTE, Obs. de Paris, Paris, France

fYear

2011

fDate

2-5 May 2011

Firstpage

1

Lastpage

4

Abstract

We present our cold atom interferometer using ⁸⁷Rb developed to perform absolute g measurement similar to the Stanford experiment which used Cs. The device and the measurement protocol are described and an example of 12 days continuous measurement is presented. This measurement shows the capabilities of the instrument in the frame of a watt balance experiment, avoiding the use of environmental models to extrapolate the accurate value of g needed to link the Planck constant to the kilogram. Limits in terms of sensitivity and accuracy are finally presented.

Keywords

atom optics; particle interferometry; Planck constant; cold atom interferometer; continuous g monitoring; measurement protocol; time 12 day; watt balance experiment; Atomic beams; Atomic measurements; Geophysical measurements; Gravity measurement; Measurement by laser beam; Optical interferometry; Sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International

Conference_Location

San Fransisco, CA

ISSN

1075-6787

Print_ISBN

978-1-61284-111-3

Type

conf

DOI

10.1109/FCS.2011.5977835

Filename

5977835