Chaotic enhancement of hydrogen-atom excitation in magnetic and microwave fields

Giuliano Benenti, Giulio Casati, and Dima L. Shepelyansky
Phys. Rev. A 56, 3297 – Published 1 October 1997
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Abstract

We numerically investigate multiphoton ionization of excited hydrogen atoms in magnetic and microwave fields when up to NI=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 than the case with microwave field only due to the chaotic structure of eigenstates in a magnetic field.

  • Received 5 June 1997

DOI:https://doi.org/10.1103/PhysRevA.56.3297

©1997 American Physical Society

Authors & Affiliations

Giuliano Benenti and Giulio Casati

  • Università di Milano, Sede di Como, Via Lucini 3, 22100 Como, Italy;
  • Istituto Nazionale di Fisica della Materia, Unità di Milano, Via Celoria 16, 20133 Milano, Italy;
  • Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Via Celoria 16, 20133 Milano, Italy

Dima L. Shepelyansky

  • Laboratoire de Physique Quantique, UMR C5626 du CNRS, Université Paul Sabatier, 31062 Toulouse, France

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Vol. 56, Iss. 4 — October 1997

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