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DOI | 10.1126/science.abc7776 |
Two-photon frequency comb spectroscopy of atomic hydrogen | |
Alexey Grinin; Arthur Matveev; Dylan C. Yost; Lothar Maisenbacher; Vitaly Wirthl; Randolf Pohl; Theodor W. Hänsch; Thomas Udem | |
2020-11-27 | |
发表期刊 | Science
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出版年 | 2020 |
英文摘要 | Discrepancy between the proton radius determined from hydrogen and muonic hydrogen spectroscopy data, the so-called “proton radius puzzle,” has been a focus of the physics community for more than a decade now. Using two-photon ultraviolet frequency comb spectroscopy below 1 kilohertz, Grinin et al. report a high-precision measurement of the 1S-3S transition frequency in atomic hydrogen (see the Perspective by Ubachs). Combining this measurement with the data for the 1S-2S transition, the authors obtained the Rydberg constant with improved accuracy and an independent value for the proton charge radius that favors the data from muonic hydrogen. However, the present frequency value differs from the one obtained previously using a different spectroscopic technique, leaving the puzzle still unresolved. Science , this issue p. [1061][1]; see also p. [1033][2] We have performed two-photon ultraviolet direct frequency comb spectroscopy on the 1S-3S transition in atomic hydrogen to illuminate the so-called proton radius puzzle and to demonstrate the potential of this method. The proton radius puzzle is a significant discrepancy between data obtained with muonic hydrogen and regular atomic hydrogen that could not be explained within the framework of quantum electrodynamics. By combining our result [ f 1S-3S = 2,922,743,278,665.79(72) kilohertz] with a previous measurement of the 1S-2S transition frequency, we obtained new values for the Rydberg constant [ R ∞ = 10,973,731.568226(38) per meter] and the proton charge radius [ r p = 0.8482(38) femtometers]. This result favors the muonic value over the world-average data as presented by the most recent published CODATA 2014 adjustment. [1]: /lookup/doi/10.1126/science.abc7776 [2]: /lookup/doi/10.1126/science.abf0589 |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/304878 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Alexey Grinin,Arthur Matveev,Dylan C. Yost,et al. Two-photon frequency comb spectroscopy of atomic hydrogen[J]. Science,2020. |
APA | Alexey Grinin.,Arthur Matveev.,Dylan C. Yost.,Lothar Maisenbacher.,Vitaly Wirthl.,...&Thomas Udem.(2020).Two-photon frequency comb spectroscopy of atomic hydrogen.Science. |
MLA | Alexey Grinin,et al."Two-photon frequency comb spectroscopy of atomic hydrogen".Science (2020). |
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