A new two-stream instability mode in magnetized quantum plasma

TL;DR

This paper introduces a novel transverse instability mode in magnetized quantum plasma, highlighting how Fermi pressure and magnetic fields influence stability, with implications for experimental plasma physics.

Contribution

It presents the first analysis of a new two-stream instability mode in magnetized quantum plasma using a quantum hydrodynamic model.

Findings

Fermi pressure causes a minimum cutoff wavelength for instability

Magnetic field stabilizes the plasma against the instability

Conditions for experimental observation are discussed

Abstract

A new transverse mode in a two-stream magnetized quantum plasma is studied by means of a quantum hydrodynamic model, under non-relativistic and ideal Fermi gas assumptions. It is found that Fermi pressure effects induce a minimum cutoff wavelength for instability, unlike the classical case which is unstable for larger wavenumbers. The external magnetic field is also shown to produce a stabilizing effect. Conditions for the applicability of the model and specific parameters for experimental observations are thoroughly discussed.