Frequency Resolved Optical Gating for Time-Resolving Intra-Atomic Knock-Out in Double Ionization with Attosecond Pulses

TL;DR

This paper introduces a quasi-classical model for a two-electron attosecond streak camera that can resolve intra-atomic collisions during double ionization using XUV pulses and infrared streaking fields.

Contribution

It develops a realistic model for time-resolving intra-atomic double ionization processes with attosecond precision.

Findings

Capable of resolving intra-atomic collisions during double ionization.

Uses XUV pulses of 24 attoseconds at 120 eV.

Employs a 1600 nm infrared streaking field at specified intensity.

Abstract

We develop the two-electron attosecond streak camera under realistic conditions using a quasi-classical model. We assume extreme ultra-violet (XUV) attosecond pulses with a full width at half maximum (FWHM) of 24 attoseconds, centered at 120 eV and a streaking infrared laser field of 1600 nm, and intensity of $1.8 \times 10^{12}$ W/cm$^2$. The proposed method is shown to be capable to time resolve intra-atomic collisions in double ionization.