Chaotic enhancement of hydrogen atoms excitation in magnetic and microwave fields

TL;DR

This paper explores how magnetic and microwave fields induce chaotic behavior in excited hydrogen atoms, significantly enhancing their excitation and ionization through multiphoton processes, with findings supported by numerical and analytical methods.

Contribution

It demonstrates the chaotic enhancement of hydrogen atom excitation in combined magnetic and microwave fields, aligning analytical estimates with numerical data.

Findings

Chaotic structure of eigenstates increases excitation efficiency.

Agreement between analytical estimates and numerical results.

Magnetic field significantly enhances multiphoton ionization.

Abstract

We numerically investigate multiphoton ionization of excited hydrogen atoms in magnetic and microwave fields when up to 600 photons are required for ionization. The analytical estimates for the quantum localization length in the classically chaotic regime are in agreement with numerical data. The excitation is much stronger as compared to the case with microwave field only due to the chaotic structure of eigenstates in magnetic field.