We have measured hyperfine structure in the first-excited P state (D lines) of all the naturally-occurring alkali atoms. We use high-resolution laser spectroscopy to resolve hyperfine transitions, and measure intervals by locking the frequency shift produced by an acousto-optic modulator to the difference between two transitions. In most cases, the hyperfine coupling constants derived from our ...

J. S. Grossman, L. A. Orozco, M. R. Pearson, J. E. Simsarian,* G. D. Sprouse, and W. Z. Zhao Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800 (Received 5 April 1999) We have measured the hyperfine structure of the 7P1 2 level for 2082212Fr to a precision of 300 ppm. These measurements along with previous ground state hyperfine structure measure...

The Mössbauer spectra of nanoferrite materials such as Ni0.25Mn0.75Fe2O4, Co0.5Mn0.5Fe2O4 and Ni0.4Co0.6Fe2O4 have been reported and the above materials were prepared by sol-gel combustion method using metal nitrates as source material and Polyvinyl alcohol(PVA) as...

The hyperfine transitions in the 399 nm S0↔ P1 line in Yb overlap with the transition in Yb. We use transverse laser cooling on this line to selectively deflect Yb atoms from a thermal beam containing both isotopes. We then use an acousto-optic modulator to span the frequency difference between the hyperfine transitions, and hence measure hyperfine structure in the P1 state. Our precise values ...

The electron paramagnetic resonance (EPR) parameters (g factors and the hyperfine structure constants) for Ni2+ and Co+ in MgO are theoretically studied from the perturbation formulas of these parameters for a 3d8 ion in octahedral crystal-fields. In the computations, the ligand orbital and spin-orbit coupling contributions are taken into account using the cluster approach. The calculated EPR p...

The hyperfine anomalies in Gd and Nd have been extracted from the experimental hyperfine structure constants using a new method. In addition to the values of the hyperfine anomaly new improved values of the nuclear magnetic dipole moment ratios are derived. PACS Numbers: 21.10.Ky, 31.30.Gs, 32.10.Fn