Weak-field asymptotic theory of tunneling ionization of the hydrogen molecule including core polarization, spectator nucleus, and internuclear motion effects

Hirokazu Matsui, Oleg I. Tolstikhin, and Toru Morishita
Phys. Rev. A 103, 033102 – Published 1 March 2021

Abstract

We present a state-of-the-art theory of tunneling ionization of the hydrogen molecule in a static electric field. The theory is based on the leading-order many-electron weak-field asymptotic theory and successively incorporates core polarization, spectator nucleus, and internuclear motion effects. The predictions of the theory are compared with ab initio calculations of the ionization rate of H2 with frozen nuclei and experimental results on the anisotropy of strong-field ionization of H2 and D2. The comparison reveals the relative role of the different effects. We show that all the effects should be taken into account in order to achieve good agreement with the ab initio and experimental results.

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  • Received 5 June 2020
  • Accepted 16 February 2021

DOI:https://doi.org/10.1103/PhysRevA.103.033102

©2021 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Hirokazu Matsui1, Oleg I. Tolstikhin2, and Toru Morishita3,1

  • 1Department of Engineering Science, The University of Electro-Communications, 1-5-1 Chofu-ga-oka, Chofu-shi, Tokyo 182-8585, Japan
  • 2Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia
  • 3Institute for Advanced Science, The University of Electro-Communications, 1-5-1 Chofu-ga-oka, Chofu-shi, Tokyo 182-8585, Japan

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Issue

Vol. 103, Iss. 3 — March 2021

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