# Coherent driving \emph{versus} decoherent dissipation in double inner-shell ionizations of neon atoms by attosecond pulses

## TL;DR

This paper investigates how coherence and decoherence affect two-photon double inner-shell ionization of neon atoms by attosecond pulses, revealing non-sequential effects and the breakdown of traditional scaling laws.

## Contribution

It introduces a quantum master equation approach to study the interplay of coherence and dissipation in double ionization processes of neon atoms.

## Key findings

- Non-sequential double ionization manifests as broadened double peaks due to energy sharing.
- Dissipation causes the breakdown of the two-photon double-ionization scaling law.
- Total cross section varies with photon energy in both non-sequential and sequential regions.

## Abstract

Exchange correlation plays an important role in double-ionization of complex atoms by ultrashort laser pulse. In this work, we investigate two-photon double inner-shell electron ionization of neon induced by an attosecond extreme ultraviolent pulse in the framework of the quantum master equation. Our simulations reveal a distinct non-sequential effect via broadened double peaks, as a result of energy sharing between the two ionized electrons. When dissipation is included to show the interplay of coherence and decoherence, the two-photon double-ionization scaling law breaks down. We further study the total cross section of $2s^2$ double ionization as a function of photon energy in both $non$-$sequential$ and $sequential$ regions.