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Analysis of the timing of freely falling antihydrogen

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arxiv 2111.02815 v1 pith:6IRMLYMA submitted 2021-11-04 physics.atom-ph gr-qc

Olivier Rousselle , Pierre Cladé , Saïda Guellati-Khélifa , Romain Guérout , Serge Reynaud This is my paper · ORCID
classification physics.atom-phgr-qc
keywords photodetachmentanalysisantihydrogenmeasurementrecoilaccelerationaccountingaccuracy
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We evaluate the accuracy to be expected for the measurement of free fall acceleration of antihydrogen in the GBAR experiment, accounting for the recoil transferred in the photodetachment process. We show that the uncertainty on the measurement of gravity comes mainly from the initial velocity dispersion in the ion trap so that the photodetachment recoil is not the limiting factor to the precision as a naive analysis would suggest. This result will ease the constraints on the choice of the photodetachment laser parameters.

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