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We report on an atom interferometer based on Bragg diffraction in a fountain of alkaline-earth-metal atoms, namely ⁸⁸Sr. We demonstrate large momentum transfer to the atoms up to eight photon recoils and the use of the interferometer as a gravimeter with a sensitivity δg/g=4×10^-8. Thanks to the special characteristics of strontium atoms for precision measurements, this result introduces alternate possibilities for experiments in fundamental and applied physics.
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Mazzoni et al. (2015) studied this question.
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