Accession Number : ADA198921

Title :   Preliminary Documentation of the MACH (Mesothermal Auroral CHarging) Code.

Descriptive Note : Rept. no. 1, Mar-Dec 87,

Corporate Author : RADEX INC CARLISLE MA

Personal Author(s) : Tautz, M. F. ; Cooke, D. C. ; Rubin, A. G. ; Yates, G. K.

Report Date : 18 DEC 1987

Pagination or Media Count : 86

Abstract : This report documents the input and output considerations for the computer code MACH, and the analytical models incorporated therein. Actual FORTRAN and C coding is not given. MACH has been designed to study Mesothermal Auroral CHarging, and other problems requiring a self-consistent steady-state solution of Poisson's equation with precise kinetic transport of charged particles. The solution space is two dimensional (axisymmetric) in configuration space, and three dimensional in velocity space. MACH code features include: limited object definition capability; Poisson's solution by hybrid SOR; stationary or drifting Maxwellian plasma; and a collisionless Vlasov approximation to particle transport, solved by a reverse trajectory 'inside-out method' augmented with a velocity space topology search algorithm. Keywords: Auroral ionosphere, 2-D Mach, Partical tracking, Poisson solution, Spacecraft charging, Vlasov solution. (KR)

Descriptors :   *COMPUTER PROGRAMS, *SPACE CHARGE, AURORAE, CHARGED PARTICLES, CODING, CONSISTENCY, DRIFT, ELECTRIC CHARGE, FORTRAN, HYBRID SYSTEMS, IONOSPHERE, KINETICS, MATHEMATICAL MODELS, MAXWELLS EQUATIONS, PARTICLES, PLASMAS(PHYSICS), POISSON DENSITY FUNCTIONS, POISSON EQUATION, PRECISION, SOLUTIONS(GENERAL), SPACECRAFT, STATIONARY, STEADY STATE, TRACKING, TRANSPORT, INPUT OUTPUT PROCESSING.

Subject Categories : Computer Programming and Software
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE