EIRENE code

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Abstract

The EIRENE code has been developed within the nuclear fusion domain to solve the kinetic  transport  equations  of  neutral  particles  within  natural  gas  transport.  It  is  a  multiw species  code  that  simultaneously  solves  a  system  of  time  dependent  or stationary linear transport equations of almost arbitrary complexity.  EIRENE allows, in  a  flexible  manner,  a  complex  system  of  collisions  (elastic  collisions,  ionization  &  recombination etc) to be defined for neutral particles via an  input file.

Description of the Technology

EIRENE is a code that has been developed within the nuclear fusion industry in order to  solve  the  kinetic  transport  equations  of  neutral  particles  within  a  Tokomak’s  plasma.  It  is  a  multiw species  code  that  simultaneously  solves  a  system  of  time dependent  or  stationary  linear  kinetic  transport  equations  of  almost  arbitrary  complexity.  
EIRENE allows, in a flexible manner, a complex system of collisions (elastic collisions, ionization & recombination etc.) to be defined for neutral particles via an input file. This  allows  not  only  for  transport  simulations  of  neutral  gas  particles  (atoms  or  molecules)  to  be  processed  but  also  the  transport  and  absorption  of  photons.  A  crude model for the transport of ionized particles along magnetic field lines is also included.  EIRENE  is  coupled  to  an  array  of  external  databases  that  supply  it  with  atomic and molecular data as well as surface reflection data.
The main goal of the code development was to provide a tool to investigate neutral gas transport within magnetically confined plasmas meaning that it is also applicable in other situations outside of nuclear fusion.

Innovation and advantages of the offer

Can  be  used  to  solve  more  general  linear  kinetic  transport  equations,  by applying a stochastic rather than a numerical or analytical method of solution
Multi-­‐species  code  that  can  simultaneously  solve  kinetic  neutral  transport equations,
Can also simulate the transport and absorption of photons,

Non-fusion applications

EIRENE was developed to investigate neutral gas transport in magnetically confined plasmas. Applications where this is relevant include: Shielding of spacecraft from cosmic radiation and Electric propulsion of spacecraft/satellites.


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