Routes to Nonsequential Double Ionization

R. Kopold, W. Becker, H. Rottke, and W. Sandner
Phys. Rev. Lett. 85, 3781 – Published 30 October 2000
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Abstract

A method is proposed for the calculation of the S matrix for many-electron processes in intense-laser atom physics, in close analogy to the strong-field approximation for one-electron processes. Given a scenario of how some process evolves, corresponding approximations to the classical action are made which allow for the evaluation of the quantum-mechanical S matrix. The method is applied to the distribution of the total electronic momentum in nonsequential double ionization, and the results are compared to recent measurements. Good agreement is obtained for neon for a rescattering scenario. There is no comparable agreement for helium and argon, and possible alternative scenarios are discussed.

  • Received 17 February 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.3781

©2000 American Physical Society

Authors & Affiliations

R. Kopold, W. Becker*, H. Rottke, and W. Sandner

  • Max-Born-Institut, Max-Born-Strasse 2a, 12489 Berlin, Germany

  • *Also at Center for Advanced Studies, Dept. of Phys. and Astron., Univ. of New Mexico, Albuquerque, NM 87131.
  • Also at Technische Universität Berlin, FB IV, 10623 Berlin, Germany.

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Vol. 85, Iss. 18 — 30 October 2000

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