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Manuscript Title: Classical motion of 2 particles (EVA2 edition 01).
Authors: D. Banks, I.C. Percival, J.McB. Wilson
Program title: EVA2 EDITION 01
Catalogue identifier: ACRC_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 3(1972)221
Programming language: Fortran.
Computer: ELLIOT 4130.
Operating system: ENL 26.
RAM: 2K words
Word size: 24
Keywords: Molecular physics, Coulomb, Diatomic, Classical, Euler, Forces, Frame, Gravitational, Hydrogen, Interatomic, Kepler, Newtonian, Orbit, Particle, Runge-kutta, Scattering, State, Representation, Other.
Classification: 16.9.

Subprograms used:
Cat Id Title Reference
ACQT_v2_0 EVAR EDITION 02 CPC 3(1972)197

Nature of problem:
Flexible representation of the classical motion of two particles interacting through a general central force.

Solution method:
A general terminology of states, frames and representations is introduced which allows changes from one state or frame to another to be defined. The frame changes are analytic. The state changes are, in general, made by transforming to the centre of mass representation and using the package EVAR EDITION 02.

Restrictions:
Limited to central forces.

Unusual features:
The main program is only a driver program for the test run, the subprograms of the package being more important.

Running time:
This depends on the form of the potential, the boundary conditions and the integration time specified.