Characterizing velocity space structures of ion cyclotron turbulence in the Earth's magnetosheath plasma

Understanding and characterizing the dissipation of turbulent energy in fusion, space, and astrophysical plasmas is of fundamental importance for the respective environments in which turbulence plays a role in transferring energy from large to small scales. We apply the novel field-particle correlation technique to electromagnetic field and plasma particle data from the Magnetospheric Multiscale mission while the spacecraft were located in the Earth's magnetosheath. Using the field-particle correlation technique, through distinct velocity-space signatures, we identify which dissipation mechanisms are presently removing energy from the turbulent field fluctuations and consequently energizing the plasma particles. Characteristic signatures of ion cyclotron damping are identified and presented as one channel of the dissipation of turbulent energy mediated by the perpendicular electric field fluctuations. We further quantify this energization rate and compare it to the turbulent energy cascade rate to find the percentage of energy dissipated via this channel.