Accession Number : ADP002124

Title :   Sheath Shapes: A 3-D Generalization of the Child-Langmuir Sheath Model for Large High-Voltage Space Structures in Dense Plasmas,

Corporate Author : PARKER (LEE W) INC CONCORD MA

Personal Author(s) : Parker,L. W. ; Holeman,E. G. ; McCoy,J. E.

Report Date : 25 JAN 1983

Pagination or Media Count : 53

Abstract : A new approach to computing sheaths of large high-voltage space structures in dense Low Earth Orbit/Polar Earth Orbit plasmas is described. The method solves the Poisson equation numerically, using a flexible-finite-element mesh that allows sheath shapes to be described through an extension of the well-known Child-Langmuir-Blodgett 1-D sheath model to three dimensions. Space charge is computed by following trajectories. This approach is potentially more efficient for 3-D sheath and wake problems than other approaches presently available.

Descriptors :   *Computations, *Plasma sheaths, *Poisson equation, Earth orbits, Space charge, Three dimensional, High voltage, Wake

Distribution Statement : APPROVED FOR PUBLIC RELEASE