Route to Direct Multiphoton Multiple Ionization

TL;DR

This paper investigates direct multiphoton multiple ionization in atoms under intense short wavelength radiation, demonstrating its dominance over sequential processes and its robustness against experimental fluctuations.

Contribution

It introduces the concept of direct multiphoton multiple ionization and analyzes conditions where it surpasses sequential ionization, supported by experimental comparisons.

Findings

Direct multiphoton ionization can dominate over sequential processes.

The process remains robust despite intensity fluctuations.

Reasonable agreement with experimental data is achieved.

Abstract

We address the concept of direct multiphoton multiple ionization in atoms exposed to intense, short wavelength radiation and explore the conditions under which such processes dominate over the sequential. Their contribution is shown to be quite robust, even under intensity fluctuations and interaction volume integration, and reasonable agreement with experimental data is also found.