EDP Sciences Journals List
Home Document
Subscriber Authentication Point
Issue Eur. Phys. J. Appl. Phys.
Volume 46, Number 2, May 2009
Article Number 21001
Number of page(s) 10
Section Plasma, Discharges and Processes
DOI 10.1051/epjap/2009049
Published online 08 April 2009

Eur. Phys. J. Appl. Phys. 46, 21001 (2009)
DOI: 10.1051/epjap/2009049

Modeling of an axial injection torch

L.L. Alves1, R. Álvarez1, L. Marques1, 2, S.J. Rubio3, A. Rodero3 and M.C. Quintero3

1  Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
2  Centro de Física da Universidade do Minho, Universidade do Minho, 4710-057 Braga, Portugal
3  Departamento de Física, Universidad de Córdoba, Campus Universitario de Rabanales, Spain

llalves@ist.utl.pt

Received: 26 August 2008 / Received in final form: 27 November 2008 / Accepted: 18 February 2009 / Published online: 8 April 2009

Abstract
This paper presents simulation results for a microwave (2.45 GHz) plasma reactor, operated by an axial injection torch (AIT). The study gives a two-dimensional description of the AIT-reactor system, based on an electromagnetic model (that solves Maxwell's equations adopting a time-harmonic description, yielding the distribution of the electromagnetic fields and the average power absorbed by the plasma), and a hydrodynamic model (that solves the Navier-Stokes' equations for the flowing neutral gas, yielding the distribution of mass density, pressure, temperature, and velocities). Comparison between model results and experimental measurements reveal common variation trends, with changes in the reactor height, for the power reflected by the system, and yield a qualitative agreement for the axial profile of the gas rotational temperature. Model results, such as the power transmission coefficient and the gas temperature, are particularly dependent on the reactor dimensions, the electron density and temperature, and the gas input flow, which indicates that simulations can be used to provide general guidelines for device optimization.

PACS
52.75.Hn - Plasma torches.
52.50.Sw - Plasma heating by microwaves; ECR, LH, collisional heating.
52.30.-q - Plasma dynamics and flow.

© EDP Sciences 2009


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.