scholarly journals Estimating relativistic electron pitch angle scattering rates using properties of the electromagnetic ion cyclotron wave spectrum

2006 ◽  
Vol 111 (A4) ◽  
Author(s):  
T. M. Loto'aniu ◽  
R. M. Thorne ◽  
B. J. Fraser ◽  
D. Summers
Keyword(s):  
Relativistic Electron ◽  
Pitch Angle ◽  
Wave Spectrum ◽  
Angle Scattering ◽  
Ion Cyclotron ◽  
Scattering Rates

scholarly journals Simultaneous Observations of Electromagnetic Ion Cyclotron (EMIC) Waves and Pitch Angle Scattering During a Van Allen Probes Conjunction

2020 ◽  
Vol 125 (4) ◽  
Author(s):  
K. Sigsbee ◽  
C. A. Kletzing ◽  
J. B. Faden ◽  
A. N. Jaynes ◽  
G. D. Reeves ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Angle Scattering ◽  
Van Allen Probes ◽  
Ion Cyclotron ◽  
Emic Waves

scholarly journals Relativistic electron dropouts by pitch angle scattering in the geomagnetic tail

2006 ◽  
Vol 24 (11) ◽  
pp. 3151-3159 ◽  
Author(s):  
J. J. Lee ◽  
G. K. Parks ◽  
K. W. Min ◽  
M. P. McCarthy ◽  
E. S. Lee ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Relativistic Electron ◽  
Magnetic Moment ◽  
Pitch Angle ◽  
Electron Flux ◽  
Electron Precipitation ◽  
Precipitation Event ◽  
Real Field ◽  
Geomagnetic Tail ◽  
Angle Scattering

Abstract. Relativistic electron dropout (RED) events are characterized by fast electron flux decrease at the geostationary orbit. It is known that the main loss process is non adiabatic and more effective for the high energy particles. RED events generally start to occur at midnight sector and propagate to noon sector and are correlated with magnetic field stretching. In this paper, we discuss this kind of event can be caused from pitch angle diffusion induced when the gyro radius of the electrons is comparable to the radius of curvature of the magnetic field and the magnetic moment is not conserved any more. While this process has been studied theoretically, the question is whether electron precipitation could be explained with this process for the real field configuration. This paper will show that this process can successfully explain the precipitation that occurred on 14 June 2004 observed by the low-altitude (680 km) polar orbiting Korean satellite, STSAT-1. In this precipitation event, the energy dispersion showed higher energy electron precipitation occurred at lower L values. This feature is a good indicator that precipitation was caused by the magnetic moment scattering in the geomagnetic tail. This interpretation is supported by the geosynchronous satellite GOES observations that showed significant magnetic field distortion occurred on the night side accompanying the electron flux depletion. Tsyganenko-01 model also shows the magnetic moment scattering could occur under the geomagnetic conditions existing at that time. We suggest the pitch angle scattering by field curvature violating the first adiabatic invariant as a possible candidate for loss mechanism of relativistic electrons in radiation belt.

scholarly journals Pitch Angle Scattering of Sub‐MeV Relativistic Electrons by Electromagnetic Ion Cyclotron Waves

2019 ◽  
Vol 124 (7) ◽  
pp. 5610-5626 ◽  
Author(s):  
R. E. Denton ◽  
L. Ofman ◽  
Y. Y. Shprits ◽  
J. Bortnik ◽  
R. M. Millan ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Relativistic Electrons ◽  
Ion Cyclotron Waves ◽  
Angle Scattering ◽  
Ion Cyclotron ◽  
Electromagnetic Ion Cyclotron Waves

Pitch-angle scattering rates in planetary magnetospheres

2005 ◽  
Vol 71 (3) ◽  
pp. 237-250 ◽  
Author(s):  
D. SUMMERS ◽  
R. L. MACE ◽  
M. A. HELLBERG
Keyword(s):  
Pitch Angle ◽  
Planetary Magnetospheres ◽  
Angle Scattering ◽  
Scattering Rates

scholarly journals Hot Plasma Effects on the Pitch-angle Scattering Rates of Radiation Belt Electrons Due to Plasmaspheric Hiss

2020 ◽  
Vol 896 (2) ◽  
pp. 118
Author(s):  
Xing Cao ◽  
Binbin Ni ◽  
Danny Summers ◽  
Song Fu ◽  
Xudong Gu ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Radiation Belt ◽  
Hot Plasma ◽  
Angle Scattering ◽  
Plasma Effects ◽  
Radiation Belt Electrons ◽  
Scattering Rates
Sign in / Sign up

Export Citation Format

Share Document