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The European Physical Journal Special Topics

, Volume 222, Issue 9, pp 2057–2066 | Cite as

Advances in laser spectroscopy of lithium

  • W. A. van Wijngaarden
  • B. Jian
Review

Abstract

A number of recent experiments have employed novel spectroscopic techniques to precisely measure the fine and hyperfine structure splittings as well as the isotope shifts for several transitions at optical frequencies for the stable 6,7Li and radioactive isotopes 8,9,11Li. These data offer an important test of theoretical techniques that have been developed over the last decade by two groups to accurately calculate effects due to Quantum Electrodynamics and the finite nuclear size in 2 and 3 electron atoms. Theory and experiment have studied several transitions in both singly ionized and neutral lithium. The work by multiple groups permits a critical examination of the consistency of separately, the experimental work as well as the theoretical calculations. Combining the measured isotope shifts with the calculated energy shifts passing these consistency tests, permits the determination of the relative nuclear charge radius with an uncertainty approaching 1 × 10−18 meter. These results are more than an order of magnitude more accurate than those obtained by electron scattering experiments and give insight into the mass and charge distributions of the nuclear constituents. Prospects for a precision measurement of the fine structure constant are also discussed.

Keywords

European Physical Journal Special Topic Laser Frequency Isotope Shift Atomic Beam Nuclear Size 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences and Springer 2013

Authors and Affiliations

  • W. A. van Wijngaarden
    • 1
  • B. Jian
    • 1
  1. 1.Department of Physics, Petrie Bldg.York UniversityTorontoCanada

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