Oscillating two-stream instability of laser wakefield-driven plasma wave

Ahmad, Nafis; Tripathi, V. K.; Ahmad, Musa; Rafat, M.

doi:10.1007/s12043-015-0963-2

Cited by 1 publication

(1 citation statement)

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“…Stabilisation effects due to the coupling of the self-generated magnetic field by Weibel instability with the laser wave field has also been shown explicitly [9]. Two-stream instability generated from FI is shown to be present in laser Wakefield-driven plasma waves as well [10]. In very different conditions, it has been reconsidered under the name of 'Chromo-Weibel instability' in relativistic heavy-ion collision experiments, having been reformulated within a quantum chromodynamic framework [11].…”

Section: Introductionmentioning

confidence: 99%

Counterstreaming beams in magnetised Vlasov plasma

et al. 2019

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In this paper, we investigate nonrelativistic, kinetic, linear phase of the filamentation instability when an external magnetic field is present in the direction of the counterstreaming electron beams using Vlasov simulations in 1D-3V space. We first investigate the growth rate of instability. In the linear growth regime, our results correspond to the previous conclusions that with the increase in strength of the ambient magnetic field, there is a suppression of instability. Interestingly, we established that at a critical/threshold magnetic field, Vlasov simulations and particlein-cell (PIC) simulations differ in their instability behaviour. At this particular magnetic field, there is a complete suppression of the growth of instability in Vlasov results compared to PIC simulations, where a strong growth of instability is shown. It is believed that thermal noise in the PIC leads to the growth. However, Vlasov simulations show wave-wave coupling which stabilises the modes. In this work, our focus is to demonstrate the difference in this behaviour and to thoroughly analyse the spectra and wave generation for the same.

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Section: Introductionmentioning

confidence: 99%