Testing quantum electrodynamics in neutral beryllium-9
Abstract
We report on measurements for the absolute transition frequency and hyperfine constants for the 2s2p 1P1 state in neutral beryllium-9. The absolute transition frequency, when compared to a theoretical prediction, serves as a test of quantum electrodynamics. There is currently a 2.5 sigma discrepancy between the theoretical prediction for the absolute transition frequency and the experimental result. Progress on spectroscopy to determine the absolute frequency and hyperfine structure for the 2s3d 1D2 state and the 2s2p 3P1 will also be presented.
PHY-1428112 (MRI); PHY-1555232 (CAREER).- Publication:
-
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- May 2018
- Bibcode:
- 2018APS..DMPH07002C