Regular Article

Comparison between quantum and classical calculations for above threshold ionization of argon^⋆

¹ Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8656, Japan
² Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), Debrecen, Hungary
³ ELI-ALPS, ELI-HU Non-profit Ltd., Dugonics tér 13, 6720 Szeged, Hungary
⁴ Photon Science Center, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8656, Japan
⁵ Research Institute for Photon Science and Laser Technology, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-0033, Japan

^a e-mail: ykormhk@atto.t.u-tokyo.ac.jp

Received: 5 February 2019
Revised: 13 May 2019
Published online: 25 July 2019

Abstract

We present comparisons between quantum and classical calculations for above threshold ionization of an Argon atom interacting with a strong laser pulse. The time-dependent complete-active-space self-consistent field (TD-CASSCF) method and the classical trajectory Monte Carlo (CTMC) method are used for the cases of quantum and classical calculations, respectively. We find and discuss differences between the results obtained by the TD-CASSCF and the CTMC simulations.