| Autor: |
K, Kato, T D G, Skinner, E A, Hessels |
| Rok vydání: |
2018 |
| Zdroj: |
Physical review letters. 121(14) |
| ISSN: |
1079-7114 |
| Popis: |
For decades, improved theory and experiment of the n=2 ^{3}P fine structure of helium have allowed for increasingly precise tests of quantum electrodynamics, determinations of the fine-structure constant α, and limitations on possible beyond-the-standard-model physics. Here we use the new frequency-offset separated-oscillatory-fields technique to measure the 2^{3}P_{2}→2^{3}P_{1} interval. Our result of 2 291 176 590(25) Hz represents a major step forward in precision for helium fine-structure measurements. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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