Accession Number : ADA137181

Title :   Sheath Ionization Model of Beam Emissions from Large Spacecrafts,

Corporate Author : AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s) : Lai,S T ; Cohen,H A ; Bhavnani,K H ; Tautz,M

PDF Url : ADA137181

Report Date : 30 Dec 1983

Pagination or Media Count : 14

Abstract : An analytical model of the charging of a spacecraft emitting electron and ion beams has been applied to the case of large spacecraft. In this model, ionization occurs in the sheath due to the return current. Charge neutralization of spherical space charge flow is examined by solving analytical equations numerically. Parametric studies of potential of large spacecraft are performed. As in the case of small spacecraft, the ions created in the sheath by the returning current play a large role in determining spacecraft potential. (Author)

Descriptors :   *Spacecraft components, Space charge, Plasma sheaths, Electron beams, Ion beams, Ionization, Spacecraft, Payload, Charged particles, Potential flow

Subject Categories : Electricity and Magnetism
      Astronautics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE