Anomalous transport of electrons has considerable impact on the overall performance Hall thrusters. Numerous studies have shown that high-frequency (on order MHz) fluctuations in both electric field and plasma density are one causes anomalous transport. This phenomenon yet to be measured detail, however, because it is difficult evaluate distribution neutral particles dispersion relation oscilla...

This paper describes recent progress of photonicallyenabled systems for millimeter-wave and terahertz measurement applications. After briefly explaining signal generation schemes as a foundation of photonics-based approach, system configurations for specific applications are discussed. Then, practical demonstrations are presented, which include frequency-domain spectroscopy, phase-sensitive mea...

on the source of plasma density and electric field perturbations in pmse and pmwe regionspolar mesospheric summer/winter echoes (pmse/pmwe) are very strong radar echoes produced by ionospheric electron density fluctuations at half the radar wavelength. the main focus of this paper is the altitude range 80 to 90 km in summer and altitude range 65-86 km in winter in the polar mesosphere . this pa...