Diamagnetism of the Hydrogen Atom in the Quasi-Landau Regime

Abstract
H-atom diamagnetism has been studied in the quasi-Landau regime with final magnetic states |mlf=0, |mlf=+1, |mlf=0, +2, selectively excited by resonant two-photon absorption. All spectra exhibit detailed characteristic line structures. For |mlf=+1 a new quasi-Landau resonance is discovered with a modulation spacing of 0.64ωc at E=0, while the other final states are modulated with 1.5ωc. The new resonance can be explained theoretically by a quasibound classical trajectory which lies outside the z=0 symmetry plane.

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