Vlasov simulations of ionospheric heating near upper hybrid resonance

Tools

Najmi, Amir and Eliasson, Bengt and Shao, Xi and Milikh, Gennady and Papadopoulos, Konstantinos (2014) Vlasov simulations of ionospheric heating near upper hybrid resonance. In: AGU Fall Meeting, 2014-12-15 - 2014-12-19, Moscone Center. (https://agu.confex.com/agu/fm14/meetingapp.cgi#Pap...)

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Abstract

It is well-known that high-frequency (HF) heating of the ionosphere can excite field- aligned density striations (FAS) in the ionospheric plasma. Furthermore, in the neighborhood of various resonances, the pump wave can undergo parametric instabilities to produce a variety of electrostatic and electromagnetic waves. We have used a Vlasov simulation with 1-spatial dimension, 2-velocity dimensions, and 2-components of fields, to study the effects of ionospheric heating when the pump frequency is in the vicinity of the upper hybrid resonance, employing parameters currently available at ionospheric heaters such as HAARP. We have found that by seeding the plasma with a FAS of width ~20% of the simulation domain, ~10% depletion, and by applying a spatially uniform HF dipole pump electric field, the pump wave gives rise to a broad spectrum of density fluctuations as well as to upper hybrid and lower hybrid oscillating electric fields. We also observe collisionless bulk-heating of the electrons that varies non-linearly with the amplitude of the pump field.

ORCID iDs

Najmi, Amir, Eliasson, Bengt ORCID logoORCID: https://orcid.org/0000-0001-6039-1574, Shao, Xi, Milikh, Gennady and Papadopoulos, Konstantinos;
  • Item type:Conference or Workshop Item(Poster)
    ID code:51117
    Dates:
    Date
    Event
    15 December 2014
    Published
    Notes:Poster ID: SA11A-3927
    Subjects:Science > Physics > Plasma physics. Ionized gases
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:15 Jan 2015 13:40
    Last modified:11 Nov 2024 16:43
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/51117
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