Injection and propagation of a nonrelativistic electron beam and spacecraft charging
Two-dimensional numerical simulations have been carried out in order to study the injection and propagation of a nonrelativistic electron beam from a spacecraft into a fully ionized plasma in a magnetic field. Contrary to the earlier results in one-dimension, a high density electron beam whose density is comparable to the ambient density can propagate into a plasma. A strong radial electric field resulting from the net charges in the beam causes the beam electrons to spread radially reducing the beam density. When the injection current exceeds the return current, significant charging of the spacecraft is observed along with the reflection of the injected electrons back to the spacecraft. Recent data on the electron beam injection from the Spacelab 1 (SEPAC) are discussed.
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 6056134
- Report Number(s):
- PPPL-2438; ON: DE87013206
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205 -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
99 GENERAL AND MISCELLANEOUS
990000* -- General & Miscellaneous
BEAM CURRENTS
BEAM INJECTION
CURRENTS
DATA
EARTH ATMOSPHERE
ELECTRON BEAM INJECTION
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
IONOSPHERE
MAGNETIC FIELDS
NUMERICAL DATA
PLANETARY IONOSPHERES
PLASMA INSTABILITY
SIMULATION
SPACE VEHICLES
SPACE WEAPONS
SURFACE AREA
SURFACE PROPERTIES
TWO-DIMENSIONAL CALCULATIONS
VEHICLES
700205 -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
99 GENERAL AND MISCELLANEOUS
990000* -- General & Miscellaneous
BEAM CURRENTS
BEAM INJECTION
CURRENTS
DATA
EARTH ATMOSPHERE
ELECTRON BEAM INJECTION
EXPERIMENTAL DATA
INFORMATION
INSTABILITY
IONOSPHERE
MAGNETIC FIELDS
NUMERICAL DATA
PLANETARY IONOSPHERES
PLASMA INSTABILITY
SIMULATION
SPACE VEHICLES
SPACE WEAPONS
SURFACE AREA
SURFACE PROPERTIES
TWO-DIMENSIONAL CALCULATIONS
VEHICLES