We have measured the Rydberg constant by frequency comparison of the three transitions 2S1/2-8S1/2, 2S1/2-8D3/2, and 2S1/2-8D5/2 in hydrogen with the difference of two optical standards, the methane-stabilized He-Ne laser and the iodine-stabilized He-Ne laser. The frequency of the iodine-stabilized He-Ne laser has been remeasured. The new value for the Rydberg constant, R=109 737.315 683 0(31) cm-1, is currently the most precise available.
ASJC Scopus subject areas
- Physics and Astronomy(all)