Abstract
During the last ten years several laser measurements of the Rydberg constant [1–8] have improved its accuracy from 3 parts in 108 to few parts in 1010 and the discrepancies among absolute values are now removed. Indeed recent measurements of \({R_\infty }\)(see table 1), obtained from the study of different transitions in atomic hydrogen and deuterium, agree very well each with other . The accuracy of all these measurements is approaching the precision (1.6 x 10−10) of the I2-stabilized He-Ne laser which serves as primary frequency/wavelength standard in the visible region.
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© 1989 Springer-Verlag Berlin, Heidelberg
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Allegrini, M., Biraben, F., Cagnac, B., Garreau, J.C., Julien, L. (1989). Determination of the Rydberg Constant by Doppler-Free Two-Photon Spectroscopy of Atomic Hydrogen Rydberg States. In: De Marchi, A. (eds) Frequency Standards and Metrology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-74501-0_62
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DOI: https://doi.org/10.1007/978-3-642-74501-0_62
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