# Energy partitioning and electron momentum distributions in intense laser-solid interactions

## TL;DR

This paper investigates how structured targets influence energy absorption and electron angular distribution in intense laser-solid interactions, using PIC simulations to analyze electron momentum and energy partitioning.

## Contribution

It demonstrates the impact of target structures on electron angular spread and energy transfer, providing insights for optimizing laser-driven particle acceleration.

## Key findings

- Structured targets widen electron angular distribution.
- Energy absorption is significantly enhanced by target structures.
- Simulation results reveal key aspects of electron momentum distributions.

## Abstract

Producing inward orientated streams of energetic electrons by intense laser pulses acting on solid targets is the most robust and accessible way of transferring the laser energy to particles, which underlies numerous applications, ranging from TNSA to laboratory astrophysics. Structures with the scale of the laser wavelength can significantly enhance energy absorption, which has been in the center of attention in recent studies. In this article, we demonstrate and assess the effect of the structures for widening the angular distribution of generated energetic electrons. We analyse the results of PIC simulations and reveal several aspects that can be important for the related applications.