Abstract
In recent years, high-precision vibrational spectroscopy of the H2+ molecular ion has been recognized as a promising method for the metrology of the electron-to-proton mass ratio me/mp. The basis for this possibility is the dependence of transition frequencies on the fundamental constants. The fundamental vibration frequency approximately scales as , where R∞ is the Rydberg constant. A comparison between experimental and theoretical data at the 1 kHz level in H2+ would allow a determination of me/mp with about 10−10 relative accuracy, a significant improvement with respect to the present accuracy of 4.6 10−10. We report on recent theoretical and experimental progress towards this goal.
© 2007 IEEE
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