Intensity Effect of Laser-assisted Double Ionization of Helium Atoms by Ultrashort XUV Pulses

2020/03/23 by Fengzheng Zhu, Zhu, Fengzheng, Genliang Li +3
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #FOS: Physical sciences #Laser-Matter Interactions and Applications #Spectroscopy and Quantum Chemical Studies

paper · pdf · doi:10.48550/arxiv.2003.10165

openalex publication_date 2020/03/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the laser-assisted single XUV photon double ionization of ground state helium. By solving full six-dimensional time-dependent schrödinger equation, we study the correlation and angular distribution. The discussion in joint energy and angular distributions reveals the competition in odd and even parity double ionization processes in the presence of weak laser field. The emission angle between two photoelectrons can be adjusted by the laser parameters. We depicts how the laser field enhance and/or enable the back-to-back and side-by-side emission of double ionization.

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