Negative energy waves and quantum relativistic Buneman instabilities

TL;DR

This paper theoretically investigates the quantum relativistic Buneman instability using a combined Klein-Gordon and fluid model, analyzing growth rates and wave spectra across different relativistic and quantum regimes relevant to dense plasmas.

Contribution

It introduces a combined Klein-Gordon and fluid model to analyze the quantum relativistic Buneman instability, exploring its growth and spectrum in various regimes.

Findings

Growth rates depend on relativistic and quantum parameters.

Unstable wave spectrum varies with plasma conditions.

Results are relevant for dense plasma streaming instabilities.

Abstract

The quantum relativistic Buneman instability is investigated theoretically using a collective Klein-Gordon model for the electrons and a cold fluid model for the ions. The growth rate and unstable wave spectrum is investigated in different parameter regimes corresponding to various degrees of relativistic and quantum effects. The results may be important for streaming instabilities involving ion dynamics in very dense plasmas.