Abstract
The Lamb shift in hydrogenic phosphorus () has been measured by the laser resonance-quenching method. An efficient synchronization between the light pulse from a tunable dye laser, pumped by a nitrogen laser, and the beam bursts of a cyclotron is used to enhance up to 0.8 the signal-to-background ratio. From the measured energy splitting, Å, and the calculated fine-structure splitting the Lamb shift THz was deduced. This result is confronted with the presently available calculations of QED.
- Received 17 August 1982
DOI:https://doi.org/10.1103/PhysRevLett.49.1762
©1982 American Physical Society