2017/09/14 by Daniel Main, D. Main, V. Sotnikov +8
Physics and Astronomy · #FOS: Physical sciences #Ionosphere and magnetosphere dynamics #Magnetic confinement fusion research #Plasma Physics (physics.plasm-ph) #Solar and Space Plasma Dynamics #physics.plasm-ph
paper · pdf · doi:10.48550/arxiv.1709.04823
13 pages, 5 figures, to be submitted to PRL
arxiv created 2017/09/14 · openalex publication_date 2017/09/14 · arxiv updated 2017/09/15 · openalex created_date 2017/09/25 · openalex updated_date 2026/07/28
We have studied the behavior of a VLF, ELF and combined ELF/VLF antenna immersed in a cold, magnetized plasma using a fully kinetic, three dimensional Particle-in-Cell simulation code called Large Scale Plasma (LSP). All the antennas are modeled as magnetic dipoles (ρant=0) and are assigned a time varying current density within a finite sized current loop. The VLF antenna is driven at 10 Amps with a frequency (ωVLF) greater than the lower hybrid frequency (ωLH), while the ELF antenna is driven at 3 Amps with a frequency (ωELF) less than ωLH. The combined ELF/VLF antenna (which we call a parametric antenna) includes both antennas driven simultaneously in the same simulation domain. We show that the parametric antenna non-linearly excites electromagnetic (EM) Whistler waves to a greater extent than the VLF antenna alone. We also show that the parametric excitation of EM Whistler waves leads to greater emitted EM power (measured in Watts) compared with a VLF antenna alone.