Charged particle fluxes in the inner magnetosphere in the region of the South Atlantic Magnetic Anomaly and the effect of intense pitch-angle and radial diffusion of plasma

Journal Article · Thu May 01 00:00:00 EDT 1986 · Cosmic Res. (Engl. Transl.); (United States)

OSTI ID:7020934

Shutle, N M; Izhovkina, N I

Greatly fluctuating energy spectra for the electron and ion components of the plasma for the range of particle energies E = 100 eV-20 keV were measured on the Kosmos-900 satellite in the region of the South Atlantic Magnetic Anomaly (SAMA) for h about 500 km, L less than or equal to 2. A mechanism is proposed in the work to explain this phenomenon: 1) the subsidence of the magnetic mirror points (for L less than or equal to 2) of particles temporarily trapped by the geomagnetic field into the ionosphere in the region of the SAMA leads to an enhancement of the flux of precipitating particles; 2) the enhancement of the plasma flux into the loss cone may be the source of the growth of wave disturbances and enhancement of pitch-angle diffusion of particles by the waves (radial diffusion is then also enhanced because of the asymmetry of the L-shells). The work presents some estimates for the amplitude of the waves for the interaction of electrons and whistlers with consideration of the characteristic fluctuations of the energy spectrum.

• OSTI ID: 7020934
• Journal Information: Cosmic Res. (Engl. Transl.); (United States), Vol. 23:6
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH MAGNETOSPHERE
CHARGED-PARTICLE PRECIPITATION
MAGNETIC STORMS
ELECTRONS
ENERGY SPECTRA
IONS
CHARGED PARTICLES
DIFFUSION
EV RANGE 100-1000
EXPERIMENT PLANNING
FLUX DENSITY
KEV RANGE 01-10
KEV RANGE 10-100
KOSMOS SATELLITES
PLASMA
REMOTE SENSING
WHISTLERS
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
EV RANGE
FERMIONS
KEV RANGE
LEPTONS
NOISE
PLANNING
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
SATELLITES
SPECTRA
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena