Lifetime of the 2p state and Lamb shift in the hydrogen atom
Pal'chikov V. G., Sokolov Yu. L., Yakovlev V. P.
The ratio of the frequency (v) of the transition (2sl/2, F= ^h{^Pm*F= 1) to the constant (γ) of the decay of the 2pl/2 state of the hydrogen atom was measured in experiments which have been described elsewhere. The constant γ was calculated within —0.3 ppm. The corresponding values of ν and of the Lamb shift are ν = 909.8934(19) MHz and δ(Η,η = 2) = 1057.8514(19) MHz.