Quasi-Landau Spectrum of the Chaotic Diamagnetic Hydrogen Atom

By the employment of "constant-scaled-energy spectroscopy" as a novel spectroscopic technique, the quasi-Landau resonance system of the diamagnetic H atom in even-partity $m=0\mathrm{}$ magnetic final states is observed for the first time in its entirety from the regular $\frac{1}{n}$ into the chaotic quasi-Landau regime. It evolves, fully unexpectedly, into a systematically structured hierarchy of generations of resonances, correlated to three physically different types of closed classical orbits.