# POS - A 1D time-dependent H+ ion source code

## Description

Abstract The code POS is based on the first three velocity moment's expansion of the transport equation, as derived in Braginskii's theory for two fully ionized fluids, H^+and e. The theory requires the solution of four (plasma density, drift velocity, electron and ion temperatures) coupled, time-dependent equations. These equations have been solved in one spatial dimension using the method of moving finite elements. Title of program: POS Catalogue Id: ABJU_v1_0 Nature of problem POS is a computer program that predicts the number densities, drift velocities, and electron and ion temperatures of two fluids, e and H+, in a volume ion source, including the effect of a magnetic filter field. Versions of this program held in the CPC repository in Mendeley Data ABJU_v1_0; POS; 10.1016/0010-4655(89)90135-5 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)