On the accuracy of Lamb shift measurements in hydrogen

Pal’chikov, V. G.; Sokolov, Yu. L.; Yakovlev, V. P.

doi:10.1088/0031-8949/55/1/006

Cited by 20 publications

(7 citation statements)

References 19 publications

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“…This correction slightly changes the original experimental result [315] ∆E = 1 057 851.4(1.9) kHz, and we cite this corrected value in Table XX. The magnitude of the new correction [120] triggered a certain discussion in the literature [317,318]. From the phenomenological point of view the new correction [120] is so small that neither of our conclusions below about the result in [315] is affected by this correction.…”

Section: Theoretical Accuracy Of the Interval L(1s) − 8l(2s)mentioning

confidence: 99%

Theory of light hydrogenlike atoms

2001

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The present status and recent developments in the theory of light hydrogenic atoms, electronic and muonic, are extensively reviewed. The discussion is based on the quantum field theoretical approach to loosely bound composite systems. The basics of the quantum field theoretical approach, which provide the framework needed for a systematic derivation of all higher order corrections to the energy levels, are briefly discussed. The main physical ideas behind the derivation of all binding, recoil, radiative, radiative-recoil, and nonelectromagnetic spin-dependent and spin-independent corrections to energy levels of hydrogenic atoms are discussed and, wherever possible, the fundamental elements of the derivations of these corrections are provided. The emphasis is on new theoretical results which were not available in earlier reviews. An up-to-date set of all theoretical contributions to the energy levels is contained in the paper. The status of modern theory is tested by comparing the theoretical results for the energy levels with the most precise experimental results for the Lamb shifts and gross structure intervals in hydrogen, deuterium, and helium ion He + , and with the experimental data on the hyperfine splitting in muonium, hydrogen and deuterium. *

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Section: Theoretical Accuracy Of the Interval L(1s) − 8l(2s)mentioning

confidence: 99%

Theory of light hydrogenlike atoms

2001

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“…For O I, the original sources of the f -values are Zeippen, Seaton, & Morton (1977), Biémont & Zeippen (1992), and Tachiev & Froese Fischer (2002). The source of f -values for H I and D I is Pal'chikov (1998). We use multiple transitions of H I, D I, and O I in our line analyses.…”

Section: Input Data and Reference Abundancesmentioning

confidence: 99%

The Deuterium‐to‐Hydrogen Ratio in a Low‐Metallicity Cloud Falling onto the Milky Way

Sembach

Wakker

Tripp

et al. 2004

ASTROPHYS J SUPPL S

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Using Far Ultraviolet Spectroscopic Explorer (FUSE) and Hubble Space Telescope (HST) observations of the QSO PG 1259+593, we detect D I Lyman-series absorption in high velocity cloud Complex C, a low-metallicity gas cloud falling onto the Milky Way. This is the first detection of atomic deuterium in the local universe in a location other than the nearby regions of the Galactic disk. We construct a velocity model for the sight line based on the numerous O I absorption lines detected in the ultraviolet spectra. We identify 8 absorption-line components, two of which are associated with the high velocity gas in Complex C at ≈ −128 and ≈ −112 km s −1 . A new Westerbork Synthesis Radio Telescope (WSRT) interferometer map of the H I 21 cm emission toward PG 1259+593 indicates that the sight line passes through a compact concentration of neutral gas in Complex C. We use the WSRT data together with single-dish data from the Effelsberg 100-meter radio telescope to estimate the H I column density of the high velocity gas and to constrain the velocity extents of the H I Lyman-series absorption components

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“…The experiment of Pal'chikov, Sokolov and Yakovlev was performed by using atomic interferometry to measure the ratio between the 2S 1/2 Lamb shift and the lifetime of the 2P 1/2 level. This result is very precise (1057.8514(19) MHz [42]), but there is a controversy over the theoretical value of 2P 1/2 lifetime which is used [43,44]. Finally, if we take into account only the direct measurements of the 2S 1/2 − 2P 1/2 and 2S 1/2 − 2P 3/2 splittings, we obtain a mean value of 1057.8439 (72) …”

Section: Lamb Shift Of the 2s 1/2 Levelmentioning

confidence: 82%