We present a detailed description of several experiments which have been previously
reported in several letters: the determination of the 1S Lamb shift in hydrogen by a …

We discuss the Maxwell electromagnetic duality relations between the Aharonov-Bohm,
Aharonov-Casher, and He-McKellar-Wilkens topological phases, which allow a unified …

We have measured the 1 S Lamb shift by comparing the frequencies of the 1 S 1/2− 3 S 1/2
and 2 S 1/2− 6 S 1/2 or 2 S 1/2− 6 D 5/2 two-photon transitions. Our result is 8172.798 (46) …

We have measured the hydrogen and deuterium 1S Lamb shift by direct optical frequency
comparison of the 1S-2S and 2S-4S/4D two-photon transitions. Our result of 8172.874 (60) …

This book completes the physical foundations and experimental techniques described in
volume 1 with an updated review of the accessory equipment indispensable in molecular …

We have measured the Rydberg constant by frequency comparison of the three transitions 2
S 1/2− 8 S 1/2, 2 S 1/2− 8 D 3/2, and 2 S 1/2− 8 D 5/2 in hydrogen with the difference of two …

The 1S ground-state Lamb shift in atomic hydrogen has been measured to an accuracy of
1.3 parts in 10 5 by directly comparing the optical frequencies of the 1S-2S and the 2S-4S …

Reactive neutral species densities for various conditions in dual frequency capacitively
coupled discharges of Ar∕ O 2⁠, Ar∕ N 2⁠, and Ar∕ H 2 were determined using optical …

The n= 2 S metastable-state hyperfine interval in atomic hydrogen has been measured to a
precision of 160 ppb by driving the magnetic-dipole radio-frequency transition in a thermal …

Hydrogen is the simplest atom, comprising only a proton and an electron. This simplicity
means its properties can be calculated theoretically with impressive accuracy, currently of …