# Gridless particle technique for the Vlasov Poisson system in problems with high degree of symmetry

## TL;DR

This paper introduces a gridless particle method using spherical shells and rings to efficiently simulate symmetric electrostatic plasmas without a computational grid.

## Contribution

The paper presents a novel gridless particle technique tailored for symmetric Vlasov-Poisson problems, improving simulation flexibility in dynamic plasma regions.

## Key findings

- Effective handling of rapidly changing plasma regions
- Suitable for spherically and axially symmetric problems
- Eliminates the need for a computational grid

## Abstract

In the paper, gridless particle techniques are presented in order to solve problems involving electrostatic, collisionless plasmas. The method makes use of computational particles having the shape of spherical shells or of rings, and can be used to study cases in which the plasma has spherical or axial symmetry, respectively. As a computational grid is absent, the technique is particularly suitable when the plasma occupies a rapidly changing space region.