On the possibility of high precision beam-foil spectroscopy using a modified Lamb-dip technique
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abstract
The application of beam-foil techniques to high-precision atomic physics is complicated by dispersion in the atomic velocities. This is analogous to the thermal Doppler broadening found in conventional laboratory sources. The advent of stable high-intensity laser sources has led to saturation (Lamb-dip) spectroscopy, which enables us to measure eigenfrequencies and natural lifetimes independent of the Doppler width. The application of this idea to beam-foil experiments involves two (tunable) laser sources. A simple calculation suggests that the resolution might be improved by several orders of magnitude. 1973.