Impedance Probe Analysis of Ionospheric Plasma Properties Using a Finite Difference Time Domain Model

Details Impedance Probe Analysis of Ionospheric Plasma Properties Using a Finite Difference Time Domain Model Impedance Probe Analysis of Ionospheric Plasma Properties Using a Finite Difference Time Domain Model

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm13a0350s&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM13A-0350

Computer Science

Sound

2431 Ionosphere/Magnetosphere Interactions (2736), 2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2494 Instruments And Techniques, 2736 Magnetosphere/Ionosphere Interactions (2431)

Scientific paper

Sweeping impedance and plasma frequency probes have flown on three recent sounding rocket missions and on the International Space Station. The sounding rocket missions launched out of Wallops Island and Kwajeline returned data from 100 km to over 400 km at low and mid-latitudes in collisional to collisionless plasmas. Data from the International Space Station is confined to Eclipse exits at 390 km altitude. The plasma impedance probes have been used to 1) Characterize the low latitude ionosphere during the EQUIS II sounding rocket campaign, 2) Study the descending layers in the E-region, 3) measure the electron temperature, density, and electron-neutral collision frequency within mid-latitude spread F and 4) measure the ambient plasma properties around the International Space Station. The impedance of the electrically short monopole, dipole or patch antenna used in these missions is determined using a Plama Fluid Finite Difference Time Domain simulation developed at Utah State University. The impedance is a function of the electron density n_e, collision frequency νen, electron temperature T_e and background magnetic field \mathbf{B}. The results of the Plasma Fluid Finite Difference Time Domain simulation are compared with the measured data obtained from the missions. In the case of the monopole and dipole antennas, available analytical results are also shown along with the simulated and measured data. Values of the plasma parameters n_e, νen and T_e obtained from the analysis are presented.

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