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

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)

摘要
程序POS基于输运方程的前三阶速度矩展开，该展开式由布拉金斯基（Braginskii）理论针对两种完全电离流体——氢离子（H⁺）与电子（e）——推导得出。该理论需要求解四个耦合的含时方程，分别对应等离子体密度、漂移速度、电子温度与离子温度。本研究采用移动有限元法在一维空间中完成了上述方程的求解。

程序名称：POS
目录编号：ABJU_v1_0

问题属性
POS是一款计算机程序，可用于预测体积离子源中两种流体（电子e与氢离子H⁺）的数密度、漂移速度，以及电子和离子温度，且纳入了磁过滤场的影响。

Mendeley数据的CPC库中收录的本程序版本：
ABJU_v1_0; POS; 10.1016/0010-4655(89)90135-5

本程序源自贝尔法斯特女王大学维护的CPC程序库（1969-2019）