PIC simulations of wave-mode conversion on the plasmapause

0474633 - ÚFA 2018 DE eng A - Abstrakt
Horký, Miroslav - Omura, Y. - Santolík, Ondřej
PIC simulations of wave-mode conversion on the plasmapause.
Geophysical Research Abstracts. Göttingen: European Geosciences Union, 2017. EGU2017-5924. ISSN 1607-7962.
[EGU General Assembly 2017. 23.04.2017-28.04.2017, Vienna]
Institucionální podpora: RVO:68378289
Klíčová slova: plasmapause * wave-mode conversion * Cluster spacecraft * Van Allen Probes spacecraft * electromagnetics waves * electromagnetic PIC code
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://meetingorganizer.copernicus.org/EGU2017/EGU2017-5924.pdf

We study a conversion process from the electron Bernstein modes to electromagnetic free space modes using a
2D-3V electromagnetic PIC code with predefined particle density irregularities. We use a Gaussian profile of the
particle density irregularity along the external magnetic field. Our results show the electron Bernstein modes generated
by the ring-beam instability in the dense plasma region as well as their conversion into the electromagnetic
waves. The resulting free space mode waves propagate out of the dense region perpendicular to magnetic field
with the corresponding energy flux. Our simulation results are compared with measured data from Cluster and Van
Allen Probes spacecraft. This wave mode conversion process might help us to explain generation of electromagnetic
waves over the plasmapause density gradient.
Trvalý link: http://hdl.handle.net/11104/0271643