Second harmonic electromagnetic emission of a turbulent magnetized plasma driven by a powerful electron beam

TL;DR

This paper models the second harmonic electromagnetic emission in a turbulent magnetized plasma driven by a powerful electron beam, explaining experimental bursts through collapse events and matching observed emission power.

Contribution

It introduces an analytical model of strong plasma turbulence with constant pump power that explains electromagnetic bursts and aligns with experimental measurements.

Findings

Emission power from three-wave interactions matches experimental data

Electromagnetic bursts are explained as collapse events in turbulence

Model provides order-of-magnitude agreement with observed emissions

Abstract

The power of second harmonic electromagnetic emission is calculated for the case when strong plasma turbulence is excited by a powerful electron beam in a magnetized plasma. It is shown that the simple analytical model of strong plasma turbulence with the assumption of a constant pump power is able to explain experimentally observed bursts of electromagnetic radiation as a consequence of separate collapse events. It is also found that the electromagnetic emission power calculated for three-wave interaction processes occurring in the long-wavelength part of turbulent spectrum is in order-of-magnitude agreement with experimental results.