Precise Optical Measurement of Lamb Shifts in Atomic Hydrogen
- 25 September 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 75 (13) , 2470-2473
- https://doi.org/10.1103/physrevlett.75.2470
Abstract
We have measured the combination of hydrogen Lamb shifts by comparing the frequencies of the and transitions. The measurement determines the Lamb shift to be 8 172 827(51) kHz, the most precise value for any Lamb shift. The theoretical predictions for are 8 172 802(30) and 8 172 654(40) kHz, corresponding to proton charge radius values of 0.862(12) and 0.805(11) fm, respectively.
Keywords
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