a Preliminary Measurement of h/MCs with Atom Interferometry
Abstract
Using an atom interferometer method based on adiabatic transfer between atomic states, we measure the recoil velocity of cesium due to the coherent scattering of a photon. The value of ħ/MCs is used to obtain a preliminary new value for the fine structure constant. The current experimental uncertainty in α is 7.4 ppb.
- Publication:
-
Frequency Standards and Metrology
- Pub Date:
- April 2002
- DOI:
- Bibcode:
- 2002fqm..conf..193W