Measurement of the two-loop Lamb shift in lithiumlike U89+
Journal Article
·
· Physical Review Letters
OSTI ID:877743
Using the SuperEBIT electron beam ion trap we have measured the 2s{sub 1/2}-2p{sub 1/2} transitions in U{sup 88+} and U{sup 89+}. The value of 280.645 {+-} 0.015 eV for Li-like U{sup 89+} improves the available precision by nearly an order of magnitude and establishes a new benchmark for testing QED, including higher-order contributions, within a fractional accuracy of better than 3 x 10{sup -4}. From our measurement, we infer a value for both the 2s and 1s two-loop Lamb shift, yielding excellent agreement with recent calculations of the 1.26 eV 1s two-loop Lamb shift in U{sup 91+}.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 877743
- Report Number(s):
- UCRL-JRNL-211310
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 95; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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