Zeeman effect of the hyperfine structure levels in hydrogenlike ions

The fully relativistic theory of the Zeeman splitting of the $1s$ hyperfine structure levels in hydrogenlike ions is considered for the magnetic field magnitude in the range from 1 to 10 T. The second-order corrections to the Breit -- Rabi formula are calculated and discussed. The results can be used for a precise determination of nuclear magnetic moments from $g$ factor experiments.Comment: 13 page

Measurement of the hyperfine splitting of the 6S1/2_{1/2} level in rubidium

We present a measurement of the hyperfine splitting of the 6S$_{1/2}$ excited level of rubidium using two photon absorption spectroscopy in a glass cell. The values we obtain for the magnetic dipole constant A are 239.18(03) MHz and 807.66(08) MHz for $^{85}$Rb and $^{87}$Rb, respectively. The combination of the magnetic moments of the two isotopes and our measurements show a hyperfine anomaly in this atomic excited state. The observed hyperfine anomaly difference has a value of $_{87}\delta_{85}=-0.0036(2)$ due to the finite distribution of nuclear magnetization, the Bohr-Weisskopf effect.Comment: 12 pages, 14 figure

Using Molecules to Measure Nuclear Spin-Dependent Parity Violation

Nuclear spin-dependent parity violation arises from weak interactions between electrons and nucleons, and from nuclear anapole moments. We outline a method to measure such effects, using a Stark-interference technique to determine the mixing between opposite-parity rotational/hyperfine levels of ground-state molecules. The technique is applicable to nuclei over a wide range of atomic number, in diatomic species that are theoretically tractable for interpretation. This should provide data on anapole moments of many nuclei, and on previously unmeasured neutral weak couplings

High-resolution vacuum-ultraviolet and ultraviolet photoionization spectroscopy of krypton

Accurate spectroscopy of krypton is performed on five transitions from the (4

La résonance quadripolaire nucléaire

Après avoir rappelé les méthodes qui donnent des informations sur le moment électrique quadripolaire des noyaux atomiques (structure hyperfine des spectres optiques, structure des raies hertziennes du domaine centimétrique, structure des raies de résonances paramagnétiques électroniques et nucléaires) l'auteur expose la méthode de la résonance nucléaire quadripolaire pure découverte en 1949 par Dehmelt et Kruger à Göttingen. L'exposé du principe de la méthode et des techniques expérimentales est suivi d'une revue des résultats obtenus depuis l'application de cette nouvelle méthode