Hydrogen-deuterium isotope shift: From the 1S-2S-transition frequency to the proton-deuteron charge-radius difference. Jentschura, U. D., Matveev, A., Parthey, C. G., Alnis, J., Pohl, R., Udem, T., Kolachevsky, N., & Hänsch, T. W. *Physical Review A - Atomic, Molecular, and Optical Physics*, 2011. doi abstract bibtex We analyze and review the theory of the hydrogen-deuterium isotope shift for the 1S-2S transition, which is one of the most accurately measured isotope shifts in any atomic system, in view of a recently improved experiment. A tabulation of all physical effects that contribute to the isotope shift is given. These include the Dirac binding energy, quantum electrodynamic effects, including recoil corrections, and the nuclear-size effect, including the pertaining relativistic and radiative corrections. From a comparison of the theoretical result $\Delta$fth=670999566.90(66)(60)kHz (exclusive of the nonrelativistic nuclear-finite-size correction) and the experimental result $\Delta$fexpt=670994334605(15) Hz, we infer the deuteron-proton charge-radius difference 2d- r2p=3.82007(65) fm2 and the deuteron structure radius rstr=1.97507(78)fm. \textcopyright 2011 American Physical Society.

@article{Jentschura2011,
abstract = {We analyze and review the theory of the hydrogen-deuterium isotope shift for the 1S-2S transition, which is one of the most accurately measured isotope shifts in any atomic system, in view of a recently improved experiment. A tabulation of all physical effects that contribute to the isotope shift is given. These include the Dirac binding energy, quantum electrodynamic effects, including recoil corrections, and the nuclear-size effect, including the pertaining relativistic and radiative corrections. From a comparison of the theoretical result $\Delta$fth=670999566.90(66)(60)kHz (exclusive of the nonrelativistic nuclear-finite-size correction) and the experimental result $\Delta$fexpt=670994334605(15) Hz, we infer the deuteron-proton charge-radius difference 2d- r2p=3.82007(65) fm2 and the deuteron structure radius rstr=1.97507(78)fm. {\textcopyright} 2011 American Physical Society.},
author = {Jentschura, U. D. and Matveev, A. and Parthey, C. G. and Alnis, J. and Pohl, R. and Udem, Th and Kolachevsky, N. and H{\"{a}}nsch, T. W.},
doi = {10.1103/PhysRevA.83.042505},
issn = {10502947},
journal = {Physical Review A - Atomic, Molecular, and Optical Physics},
number = {4},
title = {{Hydrogen-deuterium isotope shift: From the 1S-2S-transition frequency to the proton-deuteron charge-radius difference}},
volume = {83},
year = {2011}
}

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