Wakefields in streaming plasmas: Characteristics of the induced charge density distribution

TL;DR

This paper investigates the behavior of plasma polarization and induced charge density around a test charge in streaming plasmas across subsonic, sonic, and supersonic regimes, revealing different scaling laws.

Contribution

It provides a detailed analysis of the plasma polarization characteristics and charge density distribution in streaming plasmas, highlighting regime-dependent scaling behaviors.

Findings

Charge density distribution varies with flow speed.

Different scaling laws apply in subsonic and supersonic regimes.

Insights relevant for high energy density and dusty plasma experiments.

Abstract

Motivated by experiments on the generation of streaming plasmas in high energy density facilities, industrial setups, and fundamental dusty plasma research the plasma polarization around a test charge in streaming plasmas is considered. The induced charge density distribution of plasma constituents is discussed for the subsonic, sonic, and supersonic regime. Also, it is shown that the plasma polarization in the vicinity of the test charge shows different scaling in subsonic and supersonic regimes.