Inter-digital line antennas are being used to test the feasibility of lower hybrid current drive in MST. The antennas use !/4 resonators and launch slow waves at 800 MHz with n|| ~ 7.5. Routine operation has been achieved with a good impedance match between antenna and plasma. High power antenna design improvements include larger vacuum feedthroughs, better impedance matching, and rf instrument...

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Abstract Magnetic flux ropes (MFRs) are significant regions for the production of energetic electrons in space and astrophysical plasmas. However, research on electron heating acceleration driven by turbulence MFRs is still quite rare. Utilizing in‐situ measurements from MMS satellite, we study associated electrostatic waves an ion‐scale MFR within terrestrial super‐Alfvén plasma flow. Lower‐hy...

Abstract Whistler waves are thought to play an essential role in the dynamics of collisionless shocks. We use magnetospheric multiscale spacecraft study whistler around lower hybrid frequency, upstream 11 quasi‐perpendicular supercritical apply 4‐spacecraft timing method unambiguously determine wave vector k waves. find that oblique background magnetic field with a wave‐normal angle between 20°...