Quantum mechanics

Van Allen radiation belt

Magnetic field

Hiss

Metallurgy

Materials science

Computational physics

Van Allen Probes

Nuclear physics

Plume

Precipitation

Astrophysics

Plasma

Magnetosphere

Thermodynamics

Physics

Organic chemistry

Diffusion

Electron precipitation

Earth's magnetic field

Chemistry

Geophysics

Electron

Meteorology

Atmospheric sciences

Flux (metallurgy)

Plasmasphere

Journal of Geophysical Research Space Physics

We present a global survey of energetic electron precipitation from the equatorial magnetosphere due to hiss waves in the plasmasphere and plumes. Using Van Allen Probes measurements, we calculate the pitch angle diffusion coefficients at the bounce loss cone, and evaluate the energy spectrum of precipitating electron flux. Our ∼6.5‐year survey shows that, during disturbed times, hiss inside the plasmasphere primarily causes the electron precipitation at L &gt; 4 over 8 h &lt; MLT &lt; 18 h, and hiss waves in plumes cause the precipitation at L &gt; 5 over 8 h &lt; MLT &lt; 14 h and L &gt; 4 over 14 h &lt; MLT &lt; 20 h. The precipitating energy flux increases with increasing geomagnetic activity, and is typically higher in the plasmaspheric plume than the plasmasphere. The characteristic energy of precipitation increases from ∼20 keV at L = 6–∼100 keV at L = 3, potentially causing the loss of electrons at several hundred keV.

Global Survey of Electron Precipitation due to Hiss Waves in the Earth’s Plasmasphere and Plumes