Quasi-Landau modulations in nonhydrogenic systems in a magnetic field

The bound-state photoabsorption spectra for Rydberg states of lithium and strontium in a magnetic field are evaluated and compared with that of hydrogen. The line positions and oscillator strengths depend strongly on the Rydberg electron’s interaction with the ionic core. The position of the peaks in the Fourier transform of these spectra, for short times, are insensitive to the strength of the core interaction but the relative intensities of the peaks do depend on this interaction. The energy spacing of ∼0.64${\omega }_c$ is seen in the Fourier transform of all of the spectra.