NTRS - NASA Technical Reports Server

Back to Results
An altitude-dependent spacecraft charging modelA model for the altitude dependence of the hot plasma parameters responsible for the electrostatic charging of spacecraft was developed. Based upon plasma orbit theory, the directed velocity is a function of the ambient magnetic field flux density. A consequence of this approach is that while the thermal velocity distributions (assumed to be Maxwellian) of the plasma particles are independent of the magnetic field strength (and hence altitude), the particle densities increase with magnetic field strength. Thus, according to this model, while the equilibrium voltage is independent of altitude, the charging current density increases with decreasing altitude. However, the probability of such spacecraft charging decreases with decreasing altitude.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Haffner, J. W.
(Rockwell International Corp. Downey, CA, United States)
Date Acquired
August 9, 2013
Publication Date
February 24, 1977
Publication Information
Publication: NASA. Lewis Res. Center Proc. of the Spacecraft Charging Technol. Conf.
Subject Category
Launch Vehicles And Space Vehicles
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
No Preview Available