A saturated absorption spectroscopy measurement of the Rydberg constant

@article{Petley1980ASA,
  title={A saturated absorption spectroscopy measurement of the Rydberg constant},
  author={B. Petley and K. Morris and R. Shawyer},
  journal={Journal of Physics B},
  year={1980},
  volume={13},
  pages={3099-3108}
}
A tuneable dye laser saturated absorption measurement of three of the fine-structure components of the Balmer alpha line of atomic hydrogen in a gas discharge yields a value of 10, 973, 731.513(85) m-1 for the Rydberg constant. The number in parenthesis is the uncertainty in the last digit quoted. It represents a standard deviation which is obtained by combining the random (0.021 m-1) and systematic (0.082 m-1) uncertainties as the root sum of their squares. 
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